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Finding the Fourth Proportional to 865,609.50, 1,194,602.96 and 478,416.59

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Solution

The fourth proportional to 865,609.50, 1,194,602.96 and 478,416.59 is: 660,249.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,609.50 : 1,194,602.96 = 478,416.59 : x
  2. Step 2: Convert to fraction form
    865,609.50/1,194,602.96 = 478,416.59/x
  3. Step 3: Cross multiply
    865,609.50x = 1,194,602.96 × 478,416.59
  4. Step 4: Simplify right side
    865,609.50x = 571,517,866,162.01
  5. Step 5: Solve for x
    x = 571,517,866,162.01/865,609.50
  6. Step 6: Final answer
    x = 660,249.07

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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.