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Finding the Fourth Proportional to 84,782.80, 127,116.60 and 32,184.40

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Solution

The fourth proportional to 84,782.80, 127,116.60 and 32,184.40 is: 48,254.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,782.80 : 127,116.60 = 32,184.40 : x
  2. Step 2: Convert to fraction form
    84,782.80/127,116.60 = 32,184.40/x
  3. Step 3: Cross multiply
    84,782.80x = 127,116.60 × 32,184.40
  4. Step 4: Simplify right side
    84,782.80x = 4,091,171,501.04
  5. Step 5: Solve for x
    x = 4,091,171,501.04/84,782.80
  6. Step 6: Final answer
    x = 48,254.73

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1.5x scale

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.