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Finding the Fourth Proportional to 424,873.60, 637,090.78 and 125,315.96

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Solution

The fourth proportional to 424,873.60, 637,090.78 and 125,315.96 is: 187,909.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,873.60 : 637,090.78 = 125,315.96 : x
  2. Step 2: Convert to fraction form
    424,873.60/637,090.78 = 125,315.96/x
  3. Step 3: Cross multiply
    424,873.60x = 637,090.78 × 125,315.96
  4. Step 4: Simplify right side
    424,873.60x = 79,837,642,702.85
  5. Step 5: Solve for x
    x = 79,837,642,702.85/424,873.60
  6. Step 6: Final answer
    x = 187,909.16

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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.