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Finding the Fourth Proportional to 691,854.04, 954,757.02 and 390,045.88

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Solution

The fourth proportional to 691,854.04, 954,757.02 and 390,045.88 is: 538,262.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,854.04 : 954,757.02 = 390,045.88 : x
  2. Step 2: Convert to fraction form
    691,854.04/954,757.02 = 390,045.88/x
  3. Step 3: Cross multiply
    691,854.04x = 954,757.02 × 390,045.88
  4. Step 4: Simplify right side
    691,854.04x = 372,399,042,052.08
  5. Step 5: Solve for x
    x = 372,399,042,052.08/691,854.04
  6. Step 6: Final answer
    x = 538,262.44

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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.