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Finding the Fourth Proportional to 60,953.70, 91,394.10 and 31,429.20

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Solution

The fourth proportional to 60,953.70, 91,394.10 and 31,429.20 is: 47,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,953.70 : 91,394.10 = 31,429.20 : x
  2. Step 2: Convert to fraction form
    60,953.70/91,394.10 = 31,429.20/x
  3. Step 3: Cross multiply
    60,953.70x = 91,394.10 × 31,429.20
  4. Step 4: Simplify right side
    60,953.70x = 2,872,443,447.72
  5. Step 5: Solve for x
    x = 2,872,443,447.72/60,953.70
  6. Step 6: Final answer
    x = 47,125.01

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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.