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Finding the Fourth Proportional to 539,386.20, 809,079.30 and 223,810.20

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Solution

The fourth proportional to 539,386.20, 809,079.30 and 223,810.20 is: 335,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,386.20 : 809,079.30 = 223,810.20 : x
  2. Step 2: Convert to fraction form
    539,386.20/809,079.30 = 223,810.20/x
  3. Step 3: Cross multiply
    539,386.20x = 809,079.30 × 223,810.20
  4. Step 4: Simplify right side
    539,386.20x = 181,080,199,948.86
  5. Step 5: Solve for x
    x = 181,080,199,948.86/539,386.20
  6. Step 6: Final answer
    x = 335,715.30

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Half scale
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Double scale
Find fourth proportional to 539,387.20, 809,080.80 and 223,811.20
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.