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Finding the Fourth Proportional to 714,196.40, 985,542.81 and 391,927.15

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Solution

The fourth proportional to 714,196.40, 985,542.81 and 391,927.15 is: 540,833.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,196.40 : 985,542.81 = 391,927.15 : x
  2. Step 2: Convert to fraction form
    714,196.40/985,542.81 = 391,927.15/x
  3. Step 3: Cross multiply
    714,196.40x = 985,542.81 × 391,927.15
  4. Step 4: Simplify right side
    714,196.40x = 386,260,979,798.58
  5. Step 5: Solve for x
    x = 386,260,979,798.58/714,196.40
  6. Step 6: Final answer
    x = 540,833.00

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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.