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Finding the Fourth Proportional to 124,421.20, 186,631.80 and 62,213.20

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Solution

The fourth proportional to 124,421.20, 186,631.80 and 62,213.20 is: 93,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,421.20 : 186,631.80 = 62,213.20 : x
  2. Step 2: Convert to fraction form
    124,421.20/186,631.80 = 62,213.20/x
  3. Step 3: Cross multiply
    124,421.20x = 186,631.80 × 62,213.20
  4. Step 4: Simplify right side
    124,421.20x = 11,610,961,499.76
  5. Step 5: Solve for x
    x = 11,610,961,499.76/124,421.20
  6. Step 6: Final answer
    x = 93,319.80

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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.