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Finding the Fourth Proportional to 253,500.40, 349,918.60 and 156,778.30

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Solution

The fourth proportional to 253,500.40, 349,918.60 and 156,778.30 is: 216,408.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,500.40 : 349,918.60 = 156,778.30 : x
  2. Step 2: Convert to fraction form
    253,500.40/349,918.60 = 156,778.30/x
  3. Step 3: Cross multiply
    253,500.40x = 349,918.60 × 156,778.30
  4. Step 4: Simplify right side
    253,500.40x = 54,859,643,246.38
  5. Step 5: Solve for x
    x = 54,859,643,246.38/253,500.40
  6. Step 6: Final answer
    x = 216,408.51

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1.5x scale

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.