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Finding the Fourth Proportional to 142,756.80, 214,135.20 and 59,650.80

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Solution

The fourth proportional to 142,756.80, 214,135.20 and 59,650.80 is: 89,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,756.80 : 214,135.20 = 59,650.80 : x
  2. Step 2: Convert to fraction form
    142,756.80/214,135.20 = 59,650.80/x
  3. Step 3: Cross multiply
    142,756.80x = 214,135.20 × 59,650.80
  4. Step 4: Simplify right side
    142,756.80x = 12,773,335,988.16
  5. Step 5: Solve for x
    x = 12,773,335,988.16/142,756.80
  6. Step 6: Final answer
    x = 89,476.20

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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.