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Finding the Fourth Proportional to 718,565.59, 991,774.41 and 412,810.56

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Solution

The fourth proportional to 718,565.59, 991,774.41 and 412,810.56 is: 569,766.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,565.59 : 991,774.41 = 412,810.56 : x
  2. Step 2: Convert to fraction form
    718,565.59/991,774.41 = 412,810.56/x
  3. Step 3: Cross multiply
    718,565.59x = 991,774.41 × 412,810.56
  4. Step 4: Simplify right side
    718,565.59x = 409,414,947,986.38
  5. Step 5: Solve for x
    x = 409,414,947,986.38/718,565.59
  6. Step 6: Final answer
    x = 569,766.98

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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.