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Finding the Fourth Proportional to 647,354,417.70, 971,031,626.55 and 647,354,417.70

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Solution

The fourth proportional to 647,354,417.70, 971,031,626.55 and 647,354,417.70 is: 971,031,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,354,417.70 : 971,031,626.55 = 647,354,417.70 : x
  2. Step 2: Convert to fraction form
    647,354,417.70/971,031,626.55 = 647,354,417.70/x
  3. Step 3: Cross multiply
    647,354,417.70x = 971,031,626.55 × 647,354,417.70
  4. Step 4: Simplify right side
    647,354,417.70x = 628,601,613,173,559,168
  5. Step 5: Solve for x
    x = 628,601,613,173,559,168/647,354,417.70
  6. Step 6: Final answer
    x = 971,031,626.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.