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Finding the Fourth Proportional to 572,503.54, 790,079.57 and 317,854.75

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Solution

The fourth proportional to 572,503.54, 790,079.57 and 317,854.75 is: 438,653.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,503.54 : 790,079.57 = 317,854.75 : x
  2. Step 2: Convert to fraction form
    572,503.54/790,079.57 = 317,854.75/x
  3. Step 3: Cross multiply
    572,503.54x = 790,079.57 × 317,854.75
  4. Step 4: Simplify right side
    572,503.54x = 251,130,542,613.18
  5. Step 5: Solve for x
    x = 251,130,542,613.18/572,503.54
  6. Step 6: Final answer
    x = 438,653.26

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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.