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Finding the Fourth Proportional to 424,866.61, 637,080.30 and 125,308.97

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Solution

The fourth proportional to 424,866.61, 637,080.30 and 125,308.97 is: 187,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,866.61 : 637,080.30 = 125,308.97 : x
  2. Step 2: Convert to fraction form
    424,866.61/637,080.30 = 125,308.97/x
  3. Step 3: Cross multiply
    424,866.61x = 637,080.30 × 125,308.97
  4. Step 4: Simplify right side
    424,866.61x = 79,831,873,014.89
  5. Step 5: Solve for x
    x = 79,831,873,014.89/424,866.61
  6. Step 6: Final answer
    x = 187,898.68

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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.