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Finding the Fourth Proportional to 357,780.06, 536,666.34 and 91,538.46

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Solution

The fourth proportional to 357,780.06, 536,666.34 and 91,538.46 is: 137,306.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,780.06 : 536,666.34 = 91,538.46 : x
  2. Step 2: Convert to fraction form
    357,780.06/536,666.34 = 91,538.46/x
  3. Step 3: Cross multiply
    357,780.06x = 536,666.34 × 91,538.46
  4. Step 4: Simplify right side
    357,780.06x = 49,125,610,297.44
  5. Step 5: Solve for x
    x = 49,125,610,297.44/357,780.06
  6. Step 6: Final answer
    x = 137,306.73

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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.