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Finding the Fourth Proportional to 133,055.65, 183,615.15 and 72,626.68

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Solution

The fourth proportional to 133,055.65, 183,615.15 and 72,626.68 is: 100,223.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,055.65 : 183,615.15 = 72,626.68 : x
  2. Step 2: Convert to fraction form
    133,055.65/183,615.15 = 72,626.68/x
  3. Step 3: Cross multiply
    133,055.65x = 183,615.15 × 72,626.68
  4. Step 4: Simplify right side
    133,055.65x = 13,335,358,742.20
  5. Step 5: Solve for x
    x = 13,335,358,742.20/133,055.65
  6. Step 6: Final answer
    x = 100,223.92

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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.