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Finding the Fourth Proportional to 425,321.88, 586,938.80 and 231,737.65

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Solution

The fourth proportional to 425,321.88, 586,938.80 and 231,737.65 is: 319,795.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,321.88 : 586,938.80 = 231,737.65 : x
  2. Step 2: Convert to fraction form
    425,321.88/586,938.80 = 231,737.65/x
  3. Step 3: Cross multiply
    425,321.88x = 586,938.80 × 231,737.65
  4. Step 4: Simplify right side
    425,321.88x = 136,015,818,205.82
  5. Step 5: Solve for x
    x = 136,015,818,205.82/425,321.88
  6. Step 6: Final answer
    x = 319,795.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.