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Finding the Fourth Proportional to 809,143.76, 1,207,563 and 719,465.40

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Solution

The fourth proportional to 809,143.76, 1,207,563 and 719,465.40 is: 1,073,727.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,143.76 : 1,207,563 = 719,465.40 : x
  2. Step 2: Convert to fraction form
    809,143.76/1,207,563 = 719,465.40/x
  3. Step 3: Cross multiply
    809,143.76x = 1,207,563 × 719,465.40
  4. Step 4: Simplify right side
    809,143.76x = 868,799,796,820.20
  5. Step 5: Solve for x
    x = 868,799,796,820.20/809,143.76
  6. Step 6: Final answer
    x = 1,073,727.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.