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Finding the Fourth Proportional to 572,643.93, 790,250.04 and 317,995.11

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Solution

The fourth proportional to 572,643.93, 790,250.04 and 317,995.11 is: 438,834.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,643.93 : 790,250.04 = 317,995.11 : x
  2. Step 2: Convert to fraction form
    572,643.93/790,250.04 = 317,995.11/x
  3. Step 3: Cross multiply
    572,643.93x = 790,250.04 × 317,995.11
  4. Step 4: Simplify right side
    572,643.93x = 251,295,648,397.30
  5. Step 5: Solve for x
    x = 251,295,648,397.30/572,643.93
  6. Step 6: Final answer
    x = 438,834.04

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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.