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Finding the Fourth Proportional to 118,032.30, 177,048.45 and 76,041.90

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Solution

The fourth proportional to 118,032.30, 177,048.45 and 76,041.90 is: 114,062.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,032.30 : 177,048.45 = 76,041.90 : x
  2. Step 2: Convert to fraction form
    118,032.30/177,048.45 = 76,041.90/x
  3. Step 3: Cross multiply
    118,032.30x = 177,048.45 × 76,041.90
  4. Step 4: Simplify right side
    118,032.30x = 13,463,100,530.06
  5. Step 5: Solve for x
    x = 13,463,100,530.06/118,032.30
  6. Step 6: Final answer
    x = 114,062.85

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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.