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Finding the Fourth Proportional to 718,525.68, 991,565.16 and 412,622.16

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Solution

The fourth proportional to 718,525.68, 991,565.16 and 412,622.16 is: 569,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,525.68 : 991,565.16 = 412,622.16 : x
  2. Step 2: Convert to fraction form
    718,525.68/991,565.16 = 412,622.16/x
  3. Step 3: Cross multiply
    718,525.68x = 991,565.16 × 412,622.16
  4. Step 4: Simplify right side
    718,525.68x = 409,141,758,099.95
  5. Step 5: Solve for x
    x = 409,141,758,099.95/718,525.68
  6. Step 6: Final answer
    x = 569,418.42

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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.