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Finding the Fourth Proportional to 91,966.48, 137,851.64 and 52,438.48

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Solution

The fourth proportional to 91,966.48, 137,851.64 and 52,438.48 is: 78,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,966.48 : 137,851.64 = 52,438.48 : x
  2. Step 2: Convert to fraction form
    91,966.48/137,851.64 = 52,438.48/x
  3. Step 3: Cross multiply
    91,966.48x = 137,851.64 × 52,438.48
  4. Step 4: Simplify right side
    91,966.48x = 7,228,730,467.11
  5. Step 5: Solve for x
    x = 7,228,730,467.11/91,966.48
  6. Step 6: Final answer
    x = 78,601.80

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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.