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Finding the Fourth Proportional to 61,386.80, 92,074.80 and 17,009.60

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Solution

The fourth proportional to 61,386.80, 92,074.80 and 17,009.60 is: 25,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,386.80 : 92,074.80 = 17,009.60 : x
  2. Step 2: Convert to fraction form
    61,386.80/92,074.80 = 17,009.60/x
  3. Step 3: Cross multiply
    61,386.80x = 92,074.80 × 17,009.60
  4. Step 4: Simplify right side
    61,386.80x = 1,566,155,518.08
  5. Step 5: Solve for x
    x = 1,566,155,518.08/61,386.80
  6. Step 6: Final answer
    x = 25,512.90

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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.