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Finding the Fourth Proportional to 691,398.88, 954,096.24 and 389,612.32

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Solution

The fourth proportional to 691,398.88, 954,096.24 and 389,612.32 is: 537,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,398.88 : 954,096.24 = 389,612.32 : x
  2. Step 2: Convert to fraction form
    691,398.88/954,096.24 = 389,612.32/x
  3. Step 3: Cross multiply
    691,398.88x = 954,096.24 × 389,612.32
  4. Step 4: Simplify right side
    691,398.88x = 371,727,649,569.68
  5. Step 5: Solve for x
    x = 371,727,649,569.68/691,398.88
  6. Step 6: Final answer
    x = 537,645.72

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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.