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Finding the Fourth Proportional to 132,686.79, 183,078.13 and 111,263.19

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Solution

The fourth proportional to 132,686.79, 183,078.13 and 111,263.19 is: 153,518.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,686.79 : 183,078.13 = 111,263.19 : x
  2. Step 2: Convert to fraction form
    132,686.79/183,078.13 = 111,263.19/x
  3. Step 3: Cross multiply
    132,686.79x = 183,078.13 × 111,263.19
  4. Step 4: Simplify right side
    132,686.79x = 20,369,856,763.03
  5. Step 5: Solve for x
    x = 20,369,856,763.03/132,686.79
  6. Step 6: Final answer
    x = 153,518.35

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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.