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Finding the Fourth Proportional to 70,066.62, 96,691.86 and 39,437.28

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Solution

The fourth proportional to 70,066.62, 96,691.86 and 39,437.28 is: 54,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,066.62 : 96,691.86 = 39,437.28 : x
  2. Step 2: Convert to fraction form
    70,066.62/96,691.86 = 39,437.28/x
  3. Step 3: Cross multiply
    70,066.62x = 96,691.86 × 39,437.28
  4. Step 4: Simplify right side
    70,066.62x = 3,813,263,956.54
  5. Step 5: Solve for x
    x = 3,813,263,956.54/70,066.62
  6. Step 6: Final answer
    x = 54,423.40

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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.