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Finding the Fourth Proportional to 439,866.88, 607,013.76 and 238,658.56

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Solution

The fourth proportional to 439,866.88, 607,013.76 and 238,658.56 is: 329,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,866.88 : 607,013.76 = 238,658.56 : x
  2. Step 2: Convert to fraction form
    439,866.88/607,013.76 = 238,658.56/x
  3. Step 3: Cross multiply
    439,866.88x = 607,013.76 × 238,658.56
  4. Step 4: Simplify right side
    439,866.88x = 144,869,029,861.79
  5. Step 5: Solve for x
    x = 144,869,029,861.79/439,866.88
  6. Step 6: Final answer
    x = 329,347.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.