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Finding the Fourth Proportional to 75,309.71, 112,897.44 and 28,595.39

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Solution

The fourth proportional to 75,309.71, 112,897.44 and 28,595.39 is: 42,867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,309.71 : 112,897.44 = 28,595.39 : x
  2. Step 2: Convert to fraction form
    75,309.71/112,897.44 = 28,595.39/x
  3. Step 3: Cross multiply
    75,309.71x = 112,897.44 × 28,595.39
  4. Step 4: Simplify right side
    75,309.71x = 3,228,345,762.31
  5. Step 5: Solve for x
    x = 3,228,345,762.31/75,309.71
  6. Step 6: Final answer
    x = 42,867.59

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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.