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Finding the Fourth Proportional to 148,607.39, 205,078.20 and 84,946.57

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Solution

The fourth proportional to 148,607.39, 205,078.20 and 84,946.57 is: 117,226.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,607.39 : 205,078.20 = 84,946.57 : x
  2. Step 2: Convert to fraction form
    148,607.39/205,078.20 = 84,946.57/x
  3. Step 3: Cross multiply
    148,607.39x = 205,078.20 × 84,946.57
  4. Step 4: Simplify right side
    148,607.39x = 17,420,689,671.77
  5. Step 5: Solve for x
    x = 17,420,689,671.77/148,607.39
  6. Step 6: Final answer
    x = 117,226.27

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1.5x scale

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.