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Finding the Fourth Proportional to 75,430.52, 112,973.55 and 36,015.31

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Solution

The fourth proportional to 75,430.52, 112,973.55 and 36,015.31 is: 53,940.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,430.52 : 112,973.55 = 36,015.31 : x
  2. Step 2: Convert to fraction form
    75,430.52/112,973.55 = 36,015.31/x
  3. Step 3: Cross multiply
    75,430.52x = 112,973.55 × 36,015.31
  4. Step 4: Simplify right side
    75,430.52x = 4,068,776,860.18
  5. Step 5: Solve for x
    x = 4,068,776,860.18/75,430.52
  6. Step 6: Final answer
    x = 53,940.72

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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.