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Finding the Fourth Proportional to 314,867.20, 472,300.80 and 275,501.20

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Solution

The fourth proportional to 314,867.20, 472,300.80 and 275,501.20 is: 413,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,867.20 : 472,300.80 = 275,501.20 : x
  2. Step 2: Convert to fraction form
    314,867.20/472,300.80 = 275,501.20/x
  3. Step 3: Cross multiply
    314,867.20x = 472,300.80 × 275,501.20
  4. Step 4: Simplify right side
    314,867.20x = 130,119,437,160.96
  5. Step 5: Solve for x
    x = 130,119,437,160.96/314,867.20
  6. Step 6: Final answer
    x = 413,251.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.