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Finding the Fourth Proportional to 591,786.80, 887,680.20 and 260,010.80

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Solution

The fourth proportional to 591,786.80, 887,680.20 and 260,010.80 is: 390,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,786.80 : 887,680.20 = 260,010.80 : x
  2. Step 2: Convert to fraction form
    591,786.80/887,680.20 = 260,010.80/x
  3. Step 3: Cross multiply
    591,786.80x = 887,680.20 × 260,010.80
  4. Step 4: Simplify right side
    591,786.80x = 230,806,438,946.16
  5. Step 5: Solve for x
    x = 230,806,438,946.16/591,786.80
  6. Step 6: Final answer
    x = 390,016.20

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Half scale
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Double scale
Find fourth proportional to 591,787.80, 887,681.70 and 260,011.80
Similar ratio
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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.