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Finding the Fourth Proportional to 20,199,395.60, 28,350,898.38 and 20,199,395.60

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Solution

The fourth proportional to 20,199,395.60, 28,350,898.38 and 20,199,395.60 is: 28,350,898.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199,395.60 : 28,350,898.38 = 20,199,395.60 : x
  2. Step 2: Convert to fraction form
    20,199,395.60/28,350,898.38 = 20,199,395.60/x
  3. Step 3: Cross multiply
    20,199,395.60x = 28,350,898.38 × 20,199,395.60
  4. Step 4: Simplify right side
    20,199,395.60x = 572,671,011,993,019.12
  5. Step 5: Solve for x
    x = 572,671,011,993,019.12/20,199,395.60
  6. Step 6: Final answer
    x = 28,350,898.38

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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.