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Finding the Fourth Proportional to 23,405,572.40, 35,108,358.60 and 20,571,220.40

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Solution

The fourth proportional to 23,405,572.40, 35,108,358.60 and 20,571,220.40 is: 30,856,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,405,572.40 : 35,108,358.60 = 20,571,220.40 : x
  2. Step 2: Convert to fraction form
    23,405,572.40/35,108,358.60 = 20,571,220.40/x
  3. Step 3: Cross multiply
    23,405,572.40x = 35,108,358.60 × 20,571,220.40
  4. Step 4: Simplify right side
    23,405,572.40x = 722,221,782,642,835.38
  5. Step 5: Solve for x
    x = 722,221,782,642,835.38/23,405,572.40
  6. Step 6: Final answer
    x = 30,856,830.60

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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.