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Finding the Fourth Proportional to 124,418.80, 186,628.20 and 41,312.80

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Solution

The fourth proportional to 124,418.80, 186,628.20 and 41,312.80 is: 61,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,418.80 : 186,628.20 = 41,312.80 : x
  2. Step 2: Convert to fraction form
    124,418.80/186,628.20 = 41,312.80/x
  3. Step 3: Cross multiply
    124,418.80x = 186,628.20 × 41,312.80
  4. Step 4: Simplify right side
    124,418.80x = 7,710,133,500.96
  5. Step 5: Solve for x
    x = 7,710,133,500.96/124,418.80
  6. Step 6: Final answer
    x = 61,969.20

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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.