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Finding the Fourth Proportional to 133,712.80, 200,569.20 and 59,840.80

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Solution

The fourth proportional to 133,712.80, 200,569.20 and 59,840.80 is: 89,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,712.80 : 200,569.20 = 59,840.80 : x
  2. Step 2: Convert to fraction form
    133,712.80/200,569.20 = 59,840.80/x
  3. Step 3: Cross multiply
    133,712.80x = 200,569.20 × 59,840.80
  4. Step 4: Simplify right side
    133,712.80x = 12,002,221,383.36
  5. Step 5: Solve for x
    x = 12,002,221,383.36/133,712.80
  6. Step 6: Final answer
    x = 89,761.20

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1.5x scale

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.