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Finding the Fourth Proportional to 73,411.15, 110,606.05 and 66,398.98

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Solution

The fourth proportional to 73,411.15, 110,606.05 and 66,398.98 is: 100,041.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,411.15 : 110,606.05 = 66,398.98 : x
  2. Step 2: Convert to fraction form
    73,411.15/110,606.05 = 66,398.98/x
  3. Step 3: Cross multiply
    73,411.15x = 110,606.05 × 66,398.98
  4. Step 4: Simplify right side
    73,411.15x = 7,344,128,901.83
  5. Step 5: Solve for x
    x = 7,344,128,901.83/73,411.15
  6. Step 6: Final answer
    x = 100,041.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.