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Finding the Fourth Proportional to 680,422.40, 1,018,790.40 and 532,966.40

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Solution

The fourth proportional to 680,422.40, 1,018,790.40 and 532,966.40 is: 798,005.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,422.40 : 1,018,790.40 = 532,966.40 : x
  2. Step 2: Convert to fraction form
    680,422.40/1,018,790.40 = 532,966.40/x
  3. Step 3: Cross multiply
    680,422.40x = 1,018,790.40 × 532,966.40
  4. Step 4: Simplify right side
    680,422.40x = 542,981,051,842.56
  5. Step 5: Solve for x
    x = 542,981,051,842.56/680,422.40
  6. Step 6: Final answer
    x = 798,005.84

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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.