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Finding the Fourth Proportional to 77,188.80, 115,788.60 and 32,810.52

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Solution

The fourth proportional to 77,188.80, 115,788.60 and 32,810.52 is: 49,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,188.80 : 115,788.60 = 32,810.52 : x
  2. Step 2: Convert to fraction form
    77,188.80/115,788.60 = 32,810.52/x
  3. Step 3: Cross multiply
    77,188.80x = 115,788.60 × 32,810.52
  4. Step 4: Simplify right side
    77,188.80x = 3,799,084,176.07
  5. Step 5: Solve for x
    x = 3,799,084,176.07/77,188.80
  6. Step 6: Final answer
    x = 49,218.08

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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.