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Finding the Fourth Proportional to 20,667,683.60, 31,001,525.40 and 20,667,683.60

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Solution

The fourth proportional to 20,667,683.60, 31,001,525.40 and 20,667,683.60 is: 31,001,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667,683.60 : 31,001,525.40 = 20,667,683.60 : x
  2. Step 2: Convert to fraction form
    20,667,683.60/31,001,525.40 = 20,667,683.60/x
  3. Step 3: Cross multiply
    20,667,683.60x = 31,001,525.40 × 20,667,683.60
  4. Step 4: Simplify right side
    20,667,683.60x = 640,729,718,084,563.50
  5. Step 5: Solve for x
    x = 640,729,718,084,563.50/20,667,683.60
  6. Step 6: Final answer
    x = 31,001,525.40

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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.