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Finding the Fourth Proportional to 124,061.76, 186,187.68 and 61,784.64

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Solution

The fourth proportional to 124,061.76, 186,187.68 and 61,784.64 is: 92,724.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,061.76 : 186,187.68 = 61,784.64 : x
  2. Step 2: Convert to fraction form
    124,061.76/186,187.68 = 61,784.64/x
  3. Step 3: Cross multiply
    124,061.76x = 186,187.68 × 61,784.64
  4. Step 4: Simplify right side
    124,061.76x = 11,503,538,781.24
  5. Step 5: Solve for x
    x = 11,503,538,781.24/124,061.76
  6. Step 6: Final answer
    x = 92,724.29

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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.