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Finding the Fourth Proportional to 74,998.47, 112,400.10 and 67,054.80

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Solution

The fourth proportional to 74,998.47, 112,400.10 and 67,054.80 is: 100,494.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,998.47 : 112,400.10 = 67,054.80 : x
  2. Step 2: Convert to fraction form
    74,998.47/112,400.10 = 67,054.80/x
  3. Step 3: Cross multiply
    74,998.47x = 112,400.10 × 67,054.80
  4. Step 4: Simplify right side
    74,998.47x = 7,536,966,225.48
  5. Step 5: Solve for x
    x = 7,536,966,225.48/74,998.47
  6. Step 6: Final answer
    x = 100,494.93

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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.