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Finding the Fourth Proportional to 621,703.40, 932,555.10 and 222,357.20

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Solution

The fourth proportional to 621,703.40, 932,555.10 and 222,357.20 is: 333,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,703.40 : 932,555.10 = 222,357.20 : x
  2. Step 2: Convert to fraction form
    621,703.40/932,555.10 = 222,357.20/x
  3. Step 3: Cross multiply
    621,703.40x = 932,555.10 × 222,357.20
  4. Step 4: Simplify right side
    621,703.40x = 207,360,340,881.72
  5. Step 5: Solve for x
    x = 207,360,340,881.72/621,703.40
  6. Step 6: Final answer
    x = 333,535.80

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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.