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Finding the Fourth Proportional to 124,503.06, 186,942.71 and 99,468.80

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Solution

The fourth proportional to 124,503.06, 186,942.71 and 99,468.80 is: 149,353.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,503.06 : 186,942.71 = 99,468.80 : x
  2. Step 2: Convert to fraction form
    124,503.06/186,942.71 = 99,468.80/x
  3. Step 3: Cross multiply
    124,503.06x = 186,942.71 × 99,468.80
  4. Step 4: Simplify right side
    124,503.06x = 18,594,966,346.41
  5. Step 5: Solve for x
    x = 18,594,966,346.41/124,503.06
  6. Step 6: Final answer
    x = 149,353.49

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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.