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Finding the Fourth Proportional to 716,177.64, 988,331.85 and 389,493.71

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Solution

The fourth proportional to 716,177.64, 988,331.85 and 389,493.71 is: 537,504.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,177.64 : 988,331.85 = 389,493.71 : x
  2. Step 2: Convert to fraction form
    716,177.64/988,331.85 = 389,493.71/x
  3. Step 3: Cross multiply
    716,177.64x = 988,331.85 × 389,493.71
  4. Step 4: Simplify right side
    716,177.64x = 384,949,034,026.00
  5. Step 5: Solve for x
    x = 384,949,034,026.00/716,177.64
  6. Step 6: Final answer
    x = 537,504.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.