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Finding the Fourth Proportional to 28,909.10, 40,550.50 and 28,909.10

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Solution

The fourth proportional to 28,909.10, 40,550.50 and 28,909.10 is: 40,550.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.10 : 40,550.50 = 28,909.10 : x
  2. Step 2: Convert to fraction form
    28,909.10/40,550.50 = 28,909.10/x
  3. Step 3: Cross multiply
    28,909.10x = 40,550.50 × 28,909.10
  4. Step 4: Simplify right side
    28,909.10x = 1,172,278,459.55
  5. Step 5: Solve for x
    x = 1,172,278,459.55/28,909.10
  6. Step 6: Final answer
    x = 40,550.50

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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.