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Finding the Fourth Proportional to 318,368.47, 477,552.71 and 131,174.23

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Solution

The fourth proportional to 318,368.47, 477,552.71 and 131,174.23 is: 196,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,368.47 : 477,552.71 = 131,174.23 : x
  2. Step 2: Convert to fraction form
    318,368.47/477,552.71 = 131,174.23/x
  3. Step 3: Cross multiply
    318,368.47x = 477,552.71 × 131,174.23
  4. Step 4: Simplify right side
    318,368.47x = 62,642,609,018.66
  5. Step 5: Solve for x
    x = 62,642,609,018.66/318,368.47
  6. Step 6: Final answer
    x = 196,761.35

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Similar ratio
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1.5x scale

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.