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Finding the Fourth Proportional to 585,963.20, 878,944.80 and 191,979.20

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Solution

The fourth proportional to 585,963.20, 878,944.80 and 191,979.20 is: 287,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,963.20 : 878,944.80 = 191,979.20 : x
  2. Step 2: Convert to fraction form
    585,963.20/878,944.80 = 191,979.20/x
  3. Step 3: Cross multiply
    585,963.20x = 878,944.80 × 191,979.20
  4. Step 4: Simplify right side
    585,963.20x = 168,739,119,548.16
  5. Step 5: Solve for x
    x = 168,739,119,548.16/585,963.20
  6. Step 6: Final answer
    x = 287,968.80

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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.