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Finding the Fourth Proportional to 570,412.33, 787,169.18 and 315,763.52

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Solution

The fourth proportional to 570,412.33, 787,169.18 and 315,763.52 is: 435,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,412.33 : 787,169.18 = 315,763.52 : x
  2. Step 2: Convert to fraction form
    570,412.33/787,169.18 = 315,763.52/x
  3. Step 3: Cross multiply
    570,412.33x = 787,169.18 × 315,763.52
  4. Step 4: Simplify right side
    570,412.33x = 248,559,307,965.88
  5. Step 5: Solve for x
    x = 248,559,307,965.88/570,412.33
  6. Step 6: Final answer
    x = 435,753.75

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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.