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Finding the Fourth Proportional to 91,159.63, 136,505.53 and 63,040.88

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Solution

The fourth proportional to 91,159.63, 136,505.53 and 63,040.88 is: 94,399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,159.63 : 136,505.53 = 63,040.88 : x
  2. Step 2: Convert to fraction form
    91,159.63/136,505.53 = 63,040.88/x
  3. Step 3: Cross multiply
    91,159.63x = 136,505.53 × 63,040.88
  4. Step 4: Simplify right side
    91,159.63x = 8,605,428,420.86
  5. Step 5: Solve for x
    x = 8,605,428,420.86/91,159.63
  6. Step 6: Final answer
    x = 94,399.56

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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.