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Finding the Fourth Proportional to 865,085.13, 1,193,813.56 and 477,900.68

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Solution

The fourth proportional to 865,085.13, 1,193,813.56 and 477,900.68 is: 659,500.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,085.13 : 1,193,813.56 = 477,900.68 : x
  2. Step 2: Convert to fraction form
    865,085.13/1,193,813.56 = 477,900.68/x
  3. Step 3: Cross multiply
    865,085.13x = 1,193,813.56 × 477,900.68
  4. Step 4: Simplify right side
    865,085.13x = 570,524,308,089.62
  5. Step 5: Solve for x
    x = 570,524,308,089.62/865,085.13
  6. Step 6: Final answer
    x = 659,500.77

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Double scale
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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.