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Finding the Fourth Proportional to 439,520.66, 606,542.15 and 238,316.66

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Solution

The fourth proportional to 439,520.66, 606,542.15 and 238,316.66 is: 328,878.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,520.66 : 606,542.15 = 238,316.66 : x
  2. Step 2: Convert to fraction form
    439,520.66/606,542.15 = 238,316.66/x
  3. Step 3: Cross multiply
    439,520.66x = 606,542.15 × 238,316.66
  4. Step 4: Simplify right side
    439,520.66x = 144,549,099,337.22
  5. Step 5: Solve for x
    x = 144,549,099,337.22/439,520.66
  6. Step 6: Final answer
    x = 328,878.96

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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.