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Finding the Fourth Proportional to 61,938.48, 85,475.28 and 33,643.56

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Solution

The fourth proportional to 61,938.48, 85,475.28 and 33,643.56 is: 46,428.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,938.48 : 85,475.28 = 33,643.56 : x
  2. Step 2: Convert to fraction form
    61,938.48/85,475.28 = 33,643.56/x
  3. Step 3: Cross multiply
    61,938.48x = 85,475.28 × 33,643.56
  4. Step 4: Simplify right side
    61,938.48x = 2,875,692,711.20
  5. Step 5: Solve for x
    x = 2,875,692,711.20/61,938.48
  6. Step 6: Final answer
    x = 46,428.21

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Why These Related Problems?

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