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Finding the Fourth Proportional to 145,492.19, 218,291.60 and 61,273.56

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Solution

The fourth proportional to 145,492.19, 218,291.60 and 61,273.56 is: 91,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,492.19 : 218,291.60 = 61,273.56 : x
  2. Step 2: Convert to fraction form
    145,492.19/218,291.60 = 61,273.56/x
  3. Step 3: Cross multiply
    145,492.19x = 218,291.60 × 61,273.56
  4. Step 4: Simplify right side
    145,492.19x = 13,375,502,052.27
  5. Step 5: Solve for x
    x = 13,375,502,052.27/145,492.19
  6. Step 6: Final answer
    x = 91,932.78

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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.