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Finding the Fourth Proportional to 22,019,721.20, 30,891,382.60 and 22,019,721.20

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Solution

The fourth proportional to 22,019,721.20, 30,891,382.60 and 22,019,721.20 is: 30,891,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,019,721.20 : 30,891,382.60 = 22,019,721.20 : x
  2. Step 2: Convert to fraction form
    22,019,721.20/30,891,382.60 = 22,019,721.20/x
  3. Step 3: Cross multiply
    22,019,721.20x = 30,891,382.60 × 22,019,721.20
  4. Step 4: Simplify right side
    22,019,721.20x = 680,219,632,334,531.12
  5. Step 5: Solve for x
    x = 680,219,632,334,531.12/22,019,721.20
  6. Step 6: Final answer
    x = 30,891,382.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.