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Finding the Fourth Proportional to 239,425.66, 359,136.33 and 91,681.66

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Solution

The fourth proportional to 239,425.66, 359,136.33 and 91,681.66 is: 137,521.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,425.66 : 359,136.33 = 91,681.66 : x
  2. Step 2: Convert to fraction form
    239,425.66/359,136.33 = 91,681.66/x
  3. Step 3: Cross multiply
    239,425.66x = 359,136.33 × 91,681.66
  4. Step 4: Simplify right side
    239,425.66x = 32,926,214,900.71
  5. Step 5: Solve for x
    x = 32,926,214,900.71/239,425.66
  6. Step 6: Final answer
    x = 137,521.66

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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.