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Finding the Fourth Proportional to 865,761.97, 1,298,642.95 and 234,675.78

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Solution

The fourth proportional to 865,761.97, 1,298,642.95 and 234,675.78 is: 352,013.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,761.97 : 1,298,642.95 = 234,675.78 : x
  2. Step 2: Convert to fraction form
    865,761.97/1,298,642.95 = 234,675.78/x
  3. Step 3: Cross multiply
    865,761.97x = 1,298,642.95 × 234,675.78
  4. Step 4: Simplify right side
    865,761.97x = 304,760,050,621.08
  5. Step 5: Solve for x
    x = 304,760,050,621.08/865,761.97
  6. Step 6: Final answer
    x = 352,013.67

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Double scale
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Similar ratio
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1.5x scale

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.