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Finding the Fourth Proportional to 117,360.80, 176,041.20 and 115,416.80

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Solution

The fourth proportional to 117,360.80, 176,041.20 and 115,416.80 is: 173,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,360.80 : 176,041.20 = 115,416.80 : x
  2. Step 2: Convert to fraction form
    117,360.80/176,041.20 = 115,416.80/x
  3. Step 3: Cross multiply
    117,360.80x = 176,041.20 × 115,416.80
  4. Step 4: Simplify right side
    117,360.80x = 20,318,111,972.16
  5. Step 5: Solve for x
    x = 20,318,111,972.16/117,360.80
  6. Step 6: Final answer
    x = 173,125.20

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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.