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Finding the Fourth Proportional to 74,782.52, 112,195.68 and 28,039.04

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Solution

The fourth proportional to 74,782.52, 112,195.68 and 28,039.04 is: 42,066.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,782.52 : 112,195.68 = 28,039.04 : x
  2. Step 2: Convert to fraction form
    74,782.52/112,195.68 = 28,039.04/x
  3. Step 3: Cross multiply
    74,782.52x = 112,195.68 × 28,039.04
  4. Step 4: Simplify right side
    74,782.52x = 3,145,859,159.35
  5. Step 5: Solve for x
    x = 3,145,859,159.35/74,782.52
  6. Step 6: Final answer
    x = 42,066.77

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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.