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Finding the Fourth Proportional to 372,705.80, 559,058.70 and 136,056.20

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Solution

The fourth proportional to 372,705.80, 559,058.70 and 136,056.20 is: 204,084.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,705.80 : 559,058.70 = 136,056.20 : x
  2. Step 2: Convert to fraction form
    372,705.80/559,058.70 = 136,056.20/x
  3. Step 3: Cross multiply
    372,705.80x = 559,058.70 × 136,056.20
  4. Step 4: Simplify right side
    372,705.80x = 76,063,402,298.94
  5. Step 5: Solve for x
    x = 76,063,402,298.94/372,705.80
  6. Step 6: Final answer
    x = 204,084.30

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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.