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Finding the Fourth Proportional to 437,955.28, 656,932.92 and 105,531.28

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Solution

The fourth proportional to 437,955.28, 656,932.92 and 105,531.28 is: 158,296.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,955.28 : 656,932.92 = 105,531.28 : x
  2. Step 2: Convert to fraction form
    437,955.28/656,932.92 = 105,531.28/x
  3. Step 3: Cross multiply
    437,955.28x = 656,932.92 × 105,531.28
  4. Step 4: Simplify right side
    437,955.28x = 69,326,971,921.74
  5. Step 5: Solve for x
    x = 69,326,971,921.74/437,955.28
  6. Step 6: Final answer
    x = 158,296.92

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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.