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Finding the Fourth Proportional to 63,159.93, 94,720.17 and 21,030.18

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Solution

The fourth proportional to 63,159.93, 94,720.17 and 21,030.18 is: 31,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,159.93 : 94,720.17 = 21,030.18 : x
  2. Step 2: Convert to fraction form
    63,159.93/94,720.17 = 21,030.18/x
  3. Step 3: Cross multiply
    63,159.93x = 94,720.17 × 21,030.18
  4. Step 4: Simplify right side
    63,159.93x = 1,991,982,224.73
  5. Step 5: Solve for x
    x = 1,991,982,224.73/63,159.93
  6. Step 6: Final answer
    x = 31,538.70

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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.