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Finding the Fourth Proportional to 61,015.72, 91,526.14 and 21,573.16

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Solution

The fourth proportional to 61,015.72, 91,526.14 and 21,573.16 is: 32,360.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,015.72 : 91,526.14 = 21,573.16 : x
  2. Step 2: Convert to fraction form
    61,015.72/91,526.14 = 21,573.16/x
  3. Step 3: Cross multiply
    61,015.72x = 91,526.14 × 21,573.16
  4. Step 4: Simplify right side
    61,015.72x = 1,974,508,062.40
  5. Step 5: Solve for x
    x = 1,974,508,062.40/61,015.72
  6. Step 6: Final answer
    x = 32,360.65

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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.