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Finding the Fourth Proportional to 572,129.64, 858,312.42 and 187,907.46

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Solution

The fourth proportional to 572,129.64, 858,312.42 and 187,907.46 is: 281,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,129.64 : 858,312.42 = 187,907.46 : x
  2. Step 2: Convert to fraction form
    572,129.64/858,312.42 = 187,907.46/x
  3. Step 3: Cross multiply
    572,129.64x = 858,312.42 × 187,907.46
  4. Step 4: Simplify right side
    572,129.64x = 161,283,306,728.65
  5. Step 5: Solve for x
    x = 161,283,306,728.65/572,129.64
  6. Step 6: Final answer
    x = 281,899.93

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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.