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Finding the Fourth Proportional to 91,357.34, 126,084.02 and 53,631.59

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Solution

The fourth proportional to 91,357.34, 126,084.02 and 53,631.59 is: 74,017.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,357.34 : 126,084.02 = 53,631.59 : x
  2. Step 2: Convert to fraction form
    91,357.34/126,084.02 = 53,631.59/x
  3. Step 3: Cross multiply
    91,357.34x = 126,084.02 × 53,631.59
  4. Step 4: Simplify right side
    91,357.34x = 6,762,085,567.61
  5. Step 5: Solve for x
    x = 6,762,085,567.61/91,357.34
  6. Step 6: Final answer
    x = 74,017.98

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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.