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Finding the Fourth Proportional to 118,398.68, 163,390.11 and 67,408.77

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Solution

The fourth proportional to 118,398.68, 163,390.11 and 67,408.77 is: 93,024.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,398.68 : 163,390.11 = 67,408.77 : x
  2. Step 2: Convert to fraction form
    118,398.68/163,390.11 = 67,408.77/x
  3. Step 3: Cross multiply
    118,398.68x = 163,390.11 × 67,408.77
  4. Step 4: Simplify right side
    118,398.68x = 11,013,926,345.26
  5. Step 5: Solve for x
    x = 11,013,926,345.26/118,398.68
  6. Step 6: Final answer
    x = 93,024.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.