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Finding the Fourth Proportional to 91,602.36, 126,387.66 and 53,869.56

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Solution

The fourth proportional to 91,602.36, 126,387.66 and 53,869.56 is: 74,326.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,602.36 : 126,387.66 = 53,869.56 : x
  2. Step 2: Convert to fraction form
    91,602.36/126,387.66 = 53,869.56/x
  3. Step 3: Cross multiply
    91,602.36x = 126,387.66 × 53,869.56
  4. Step 4: Simplify right side
    91,602.36x = 6,808,447,633.63
  5. Step 5: Solve for x
    x = 6,808,447,633.63/91,602.36
  6. Step 6: Final answer
    x = 74,326.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.