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Finding the Fourth Proportional to 124,190.70, 186,310.35 and 53,113.20

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Solution

The fourth proportional to 124,190.70, 186,310.35 and 53,113.20 is: 79,680.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,190.70 : 186,310.35 = 53,113.20 : x
  2. Step 2: Convert to fraction form
    124,190.70/186,310.35 = 53,113.20/x
  3. Step 3: Cross multiply
    124,190.70x = 186,310.35 × 53,113.20
  4. Step 4: Simplify right side
    124,190.70x = 9,895,538,881.62
  5. Step 5: Solve for x
    x = 9,895,538,881.62/124,190.70
  6. Step 6: Final answer
    x = 79,680.19

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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.