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Finding the Fourth Proportional to 20,037,612.90, 28,109,345.10 and 20,037,612.90

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Solution

The fourth proportional to 20,037,612.90, 28,109,345.10 and 20,037,612.90 is: 28,109,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,037,612.90 : 28,109,345.10 = 20,037,612.90 : x
  2. Step 2: Convert to fraction form
    20,037,612.90/28,109,345.10 = 20,037,612.90/x
  3. Step 3: Cross multiply
    20,037,612.90x = 28,109,345.10 × 20,037,612.90
  4. Step 4: Simplify right side
    20,037,612.90x = 563,244,175,986,311.75
  5. Step 5: Solve for x
    x = 563,244,175,986,311.75/20,037,612.90
  6. Step 6: Final answer
    x = 28,109,345.10

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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.