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Finding the Fourth Proportional to 572,503.29, 790,079.22 and 317,854.50

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Solution

The fourth proportional to 572,503.29, 790,079.22 and 317,854.50 is: 438,652.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,503.29 : 790,079.22 = 317,854.50 : x
  2. Step 2: Convert to fraction form
    572,503.29/790,079.22 = 317,854.50/x
  3. Step 3: Cross multiply
    572,503.29x = 790,079.22 × 317,854.50
  4. Step 4: Simplify right side
    572,503.29x = 251,130,235,433.49
  5. Step 5: Solve for x
    x = 251,130,235,433.49/572,503.29
  6. Step 6: Final answer
    x = 438,652.91

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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.