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Finding the Fourth Proportional to 391,256.44, 586,923.54 and 141,957.88

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Solution

The fourth proportional to 391,256.44, 586,923.54 and 141,957.88 is: 212,950.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,256.44 : 586,923.54 = 141,957.88 : x
  2. Step 2: Convert to fraction form
    391,256.44/586,923.54 = 141,957.88/x
  3. Step 3: Cross multiply
    391,256.44x = 586,923.54 × 141,957.88
  4. Step 4: Simplify right side
    391,256.44x = 83,318,421,460.50
  5. Step 5: Solve for x
    x = 83,318,421,460.50/391,256.44
  6. Step 6: Final answer
    x = 212,950.93

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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.