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Finding the Fourth Proportional to 31,248.16, 43,129.68 and 19,152.28

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Solution

The fourth proportional to 31,248.16, 43,129.68 and 19,152.28 is: 26,434.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,248.16 : 43,129.68 = 19,152.28 : x
  2. Step 2: Convert to fraction form
    31,248.16/43,129.68 = 19,152.28/x
  3. Step 3: Cross multiply
    31,248.16x = 43,129.68 × 19,152.28
  4. Step 4: Simplify right side
    31,248.16x = 826,031,707.67
  5. Step 5: Solve for x
    x = 826,031,707.67/31,248.16
  6. Step 6: Final answer
    x = 26,434.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.