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Finding the Fourth Proportional to 99,792.28, 149,723.84 and 62,308.90

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Solution

The fourth proportional to 99,792.28, 149,723.84 and 62,308.90 is: 93,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,792.28 : 149,723.84 = 62,308.90 : x
  2. Step 2: Convert to fraction form
    99,792.28/149,723.84 = 62,308.90/x
  3. Step 3: Cross multiply
    99,792.28x = 149,723.84 × 62,308.90
  4. Step 4: Simplify right side
    99,792.28x = 9,329,127,774.18
  5. Step 5: Solve for x
    x = 9,329,127,774.18/99,792.28
  6. Step 6: Final answer
    x = 93,485.47

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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.