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Finding the Fourth Proportional to 185,416.80, 278,125.20 and 125,541.60

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Solution

The fourth proportional to 185,416.80, 278,125.20 and 125,541.60 is: 188,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,416.80 : 278,125.20 = 125,541.60 : x
  2. Step 2: Convert to fraction form
    185,416.80/278,125.20 = 125,541.60/x
  3. Step 3: Cross multiply
    185,416.80x = 278,125.20 × 125,541.60
  4. Step 4: Simplify right side
    185,416.80x = 34,916,282,608.32
  5. Step 5: Solve for x
    x = 34,916,282,608.32/185,416.80
  6. Step 6: Final answer
    x = 188,312.40

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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.