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Finding the Fourth Proportional to 582,947.80, 874,421.70 and 209,008.60

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Solution

The fourth proportional to 582,947.80, 874,421.70 and 209,008.60 is: 313,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,947.80 : 874,421.70 = 209,008.60 : x
  2. Step 2: Convert to fraction form
    582,947.80/874,421.70 = 209,008.60/x
  3. Step 3: Cross multiply
    582,947.80x = 874,421.70 × 209,008.60
  4. Step 4: Simplify right side
    582,947.80x = 182,761,655,326.62
  5. Step 5: Solve for x
    x = 182,761,655,326.62/582,947.80
  6. Step 6: Final answer
    x = 313,512.90

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Half scale
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Double scale
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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.