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Finding the Fourth Proportional to 91,666.33, 137,710.00 and 64,710.65

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Solution

The fourth proportional to 91,666.33, 137,710.00 and 64,710.65 is: 97,214.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,666.33 : 137,710.00 = 64,710.65 : x
  2. Step 2: Convert to fraction form
    91,666.33/137,710.00 = 64,710.65/x
  3. Step 3: Cross multiply
    91,666.33x = 137,710.00 × 64,710.65
  4. Step 4: Simplify right side
    91,666.33x = 8,911,304,036.66
  5. Step 5: Solve for x
    x = 8,911,304,036.66/91,666.33
  6. Step 6: Final answer
    x = 97,214.59

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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.