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Finding the Fourth Proportional to 647,548.70, 971,323.05 and 619,555.10

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Solution

The fourth proportional to 647,548.70, 971,323.05 and 619,555.10 is: 929,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,548.70 : 971,323.05 = 619,555.10 : x
  2. Step 2: Convert to fraction form
    647,548.70/971,323.05 = 619,555.10/x
  3. Step 3: Cross multiply
    647,548.70x = 971,323.05 × 619,555.10
  4. Step 4: Simplify right side
    647,548.70x = 601,788,149,375.06
  5. Step 5: Solve for x
    x = 601,788,149,375.06/647,548.70
  6. Step 6: Final answer
    x = 929,332.65

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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.