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Finding the Fourth Proportional to 61,920.69, 92,851.75 and 23,987.72

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Solution

The fourth proportional to 61,920.69, 92,851.75 and 23,987.72 is: 35,970.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,920.69 : 92,851.75 = 23,987.72 : x
  2. Step 2: Convert to fraction form
    61,920.69/92,851.75 = 23,987.72/x
  3. Step 3: Cross multiply
    61,920.69x = 92,851.75 × 23,987.72
  4. Step 4: Simplify right side
    61,920.69x = 2,227,301,952.67
  5. Step 5: Solve for x
    x = 2,227,301,952.67/61,920.69
  6. Step 6: Final answer
    x = 35,970.24

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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.