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Finding the Fourth Proportional to 526,121.40, 788,663.70 and 259,663.80

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Solution

The fourth proportional to 526,121.40, 788,663.70 and 259,663.80 is: 389,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,121.40 : 788,663.70 = 259,663.80 : x
  2. Step 2: Convert to fraction form
    526,121.40/788,663.70 = 259,663.80/x
  3. Step 3: Cross multiply
    526,121.40x = 788,663.70 × 259,663.80
  4. Step 4: Simplify right side
    526,121.40x = 204,787,413,264.06
  5. Step 5: Solve for x
    x = 204,787,413,264.06/526,121.40
  6. Step 6: Final answer
    x = 389,239.85

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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.