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Finding the Fourth Proportional to 75,055.01, 112,572.79 and 28,301.81

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Solution

The fourth proportional to 75,055.01, 112,572.79 and 28,301.81 is: 42,449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,055.01 : 112,572.79 = 28,301.81 : x
  2. Step 2: Convert to fraction form
    75,055.01/112,572.79 = 28,301.81/x
  3. Step 3: Cross multiply
    75,055.01x = 112,572.79 × 28,301.81
  4. Step 4: Simplify right side
    75,055.01x = 3,186,013,924.43
  5. Step 5: Solve for x
    x = 3,186,013,924.43/75,055.01
  6. Step 6: Final answer
    x = 42,449.05

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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.