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Finding the Fourth Proportional to 124,069.92, 186,154.64 and 45,189.60

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Solution

The fourth proportional to 124,069.92, 186,154.64 and 45,189.60 is: 67,802.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,069.92 : 186,154.64 = 45,189.60 : x
  2. Step 2: Convert to fraction form
    124,069.92/186,154.64 = 45,189.60/x
  3. Step 3: Cross multiply
    124,069.92x = 186,154.64 × 45,189.60
  4. Step 4: Simplify right side
    124,069.92x = 8,412,253,719.74
  5. Step 5: Solve for x
    x = 8,412,253,719.74/124,069.92
  6. Step 6: Final answer
    x = 67,802.52

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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.