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Finding the Fourth Proportional to 91,195.88, 136,681.49 and 64,757.48

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Solution

The fourth proportional to 91,195.88, 136,681.49 and 64,757.48 is: 97,056.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,195.88 : 136,681.49 = 64,757.48 : x
  2. Step 2: Convert to fraction form
    91,195.88/136,681.49 = 64,757.48/x
  3. Step 3: Cross multiply
    91,195.88x = 136,681.49 × 64,757.48
  4. Step 4: Simplify right side
    91,195.88x = 8,851,148,333.53
  5. Step 5: Solve for x
    x = 8,851,148,333.53/91,195.88
  6. Step 6: Final answer
    x = 97,056.45

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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.