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Finding the Fourth Proportional to 661,219.73, 912,582.98 and 403,246.34

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Solution

The fourth proportional to 661,219.73, 912,582.98 and 403,246.34 is: 556,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,219.73 : 912,582.98 = 403,246.34 : x
  2. Step 2: Convert to fraction form
    661,219.73/912,582.98 = 403,246.34/x
  3. Step 3: Cross multiply
    661,219.73x = 912,582.98 × 403,246.34
  4. Step 4: Simplify right side
    661,219.73x = 367,995,746,631.29
  5. Step 5: Solve for x
    x = 367,995,746,631.29/661,219.73
  6. Step 6: Final answer
    x = 556,540.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.