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Finding the Fourth Proportional to 647,525.70, 971,288.55 and 174,258.90

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Solution

The fourth proportional to 647,525.70, 971,288.55 and 174,258.90 is: 261,388.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,525.70 : 971,288.55 = 174,258.90 : x
  2. Step 2: Convert to fraction form
    647,525.70/971,288.55 = 174,258.90/x
  3. Step 3: Cross multiply
    647,525.70x = 971,288.55 × 174,258.90
  4. Step 4: Simplify right side
    647,525.70x = 169,255,674,305.60
  5. Step 5: Solve for x
    x = 169,255,674,305.60/647,525.70
  6. Step 6: Final answer
    x = 261,388.35

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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.