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Finding the Fourth Proportional to 559,316.80, 838,975.20 and 543,764.80

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Solution

The fourth proportional to 559,316.80, 838,975.20 and 543,764.80 is: 815,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,316.80 : 838,975.20 = 543,764.80 : x
  2. Step 2: Convert to fraction form
    559,316.80/838,975.20 = 543,764.80/x
  3. Step 3: Cross multiply
    559,316.80x = 838,975.20 × 543,764.80
  4. Step 4: Simplify right side
    559,316.80x = 456,205,181,832.96
  5. Step 5: Solve for x
    x = 456,205,181,832.96/559,316.80
  6. Step 6: Final answer
    x = 815,647.20

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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.