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Finding the Fourth Proportional to 75,009.70, 112,514.55 and 73,260.10

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Solution

The fourth proportional to 75,009.70, 112,514.55 and 73,260.10 is: 109,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,009.70 : 112,514.55 = 73,260.10 : x
  2. Step 2: Convert to fraction form
    75,009.70/112,514.55 = 73,260.10/x
  3. Step 3: Cross multiply
    75,009.70x = 112,514.55 × 73,260.10
  4. Step 4: Simplify right side
    75,009.70x = 8,242,827,184.46
  5. Step 5: Solve for x
    x = 8,242,827,184.46/75,009.70
  6. Step 6: Final answer
    x = 109,890.15

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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.