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Finding the Fourth Proportional to 269,169.90, 403,256.70 and 156,903.90

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Solution

The fourth proportional to 269,169.90, 403,256.70 and 156,903.90 is: 235,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,169.90 : 403,256.70 = 156,903.90 : x
  2. Step 2: Convert to fraction form
    269,169.90/403,256.70 = 156,903.90/x
  3. Step 3: Cross multiply
    269,169.90x = 403,256.70 × 156,903.90
  4. Step 4: Simplify right side
    269,169.90x = 63,272,548,931.13
  5. Step 5: Solve for x
    x = 63,272,548,931.13/269,169.90
  6. Step 6: Final answer
    x = 235,065.47

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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.