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Finding the Fourth Proportional to 124,420.80, 186,631.20 and 62,212.80

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Solution

The fourth proportional to 124,420.80, 186,631.20 and 62,212.80 is: 93,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,420.80 : 186,631.20 = 62,212.80 : x
  2. Step 2: Convert to fraction form
    124,420.80/186,631.20 = 62,212.80/x
  3. Step 3: Cross multiply
    124,420.80x = 186,631.20 × 62,212.80
  4. Step 4: Simplify right side
    124,420.80x = 11,610,849,519.36
  5. Step 5: Solve for x
    x = 11,610,849,519.36/124,420.80
  6. Step 6: Final answer
    x = 93,319.20

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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.