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Finding the Fourth Proportional to 92,103.12, 138,154.68 and 60,931.08

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Solution

The fourth proportional to 92,103.12, 138,154.68 and 60,931.08 is: 91,396.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,103.12 : 138,154.68 = 60,931.08 : x
  2. Step 2: Convert to fraction form
    92,103.12/138,154.68 = 60,931.08/x
  3. Step 3: Cross multiply
    92,103.12x = 138,154.68 × 60,931.08
  4. Step 4: Simplify right side
    92,103.12x = 8,417,913,859.45
  5. Step 5: Solve for x
    x = 8,417,913,859.45/92,103.12
  6. Step 6: Final answer
    x = 91,396.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.