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Finding the Fourth Proportional to 721,903.18, 996,315.42 and 411,882.10

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Solution

The fourth proportional to 721,903.18, 996,315.42 and 411,882.10 is: 568,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,903.18 : 996,315.42 = 411,882.10 : x
  2. Step 2: Convert to fraction form
    721,903.18/996,315.42 = 411,882.10/x
  3. Step 3: Cross multiply
    721,903.18x = 996,315.42 × 411,882.10
  4. Step 4: Simplify right side
    721,903.18x = 410,364,487,451.98
  5. Step 5: Solve for x
    x = 410,364,487,451.98/721,903.18
  6. Step 6: Final answer
    x = 568,448.10

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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.