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Finding the Fourth Proportional to 124,804.80, 172,627.20 and 118,972.80

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Solution

The fourth proportional to 124,804.80, 172,627.20 and 118,972.80 is: 164,560.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,804.80 : 172,627.20 = 118,972.80 : x
  2. Step 2: Convert to fraction form
    124,804.80/172,627.20 = 118,972.80/x
  3. Step 3: Cross multiply
    124,804.80x = 172,627.20 × 118,972.80
  4. Step 4: Simplify right side
    124,804.80x = 20,537,941,340.16
  5. Step 5: Solve for x
    x = 20,537,941,340.16/124,804.80
  6. Step 6: Final answer
    x = 164,560.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.