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Finding the Fourth Proportional to 866,410.90, 1,299,703.20 and 297,717.10

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Solution

The fourth proportional to 866,410.90, 1,299,703.20 and 297,717.10 is: 446,605.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,410.90 : 1,299,703.20 = 297,717.10 : x
  2. Step 2: Convert to fraction form
    866,410.90/1,299,703.20 = 297,717.10/x
  3. Step 3: Cross multiply
    866,410.90x = 1,299,703.20 × 297,717.10
  4. Step 4: Simplify right side
    866,410.90x = 386,943,867,564.72
  5. Step 5: Solve for x
    x = 386,943,867,564.72/866,410.90
  6. Step 6: Final answer
    x = 446,605.49

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Double scale
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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.