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Finding the Fourth Proportional to 148,607.64, 205,078.50 and 84,946.80

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Solution

The fourth proportional to 148,607.64, 205,078.50 and 84,946.80 is: 117,226.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,607.64 : 205,078.50 = 84,946.80 : x
  2. Step 2: Convert to fraction form
    148,607.64/205,078.50 = 84,946.80/x
  3. Step 3: Cross multiply
    148,607.64x = 205,078.50 × 84,946.80
  4. Step 4: Simplify right side
    148,607.64x = 17,420,762,323.80
  5. Step 5: Solve for x
    x = 17,420,762,323.80/148,607.64
  6. Step 6: Final answer
    x = 117,226.56

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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.