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Finding the Fourth Proportional to 5,280,349.70, 7,920,524.55 and 5,280,349.70

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Solution

The fourth proportional to 5,280,349.70, 7,920,524.55 and 5,280,349.70 is: 7,920,524.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,349.70 : 7,920,524.55 = 5,280,349.70 : x
  2. Step 2: Convert to fraction form
    5,280,349.70/7,920,524.55 = 5,280,349.70/x
  3. Step 3: Cross multiply
    5,280,349.70x = 7,920,524.55 × 5,280,349.70
  4. Step 4: Simplify right side
    5,280,349.70x = 41,823,139,431,435.13
  5. Step 5: Solve for x
    x = 41,823,139,431,435.13/5,280,349.70
  6. Step 6: Final answer
    x = 7,920,524.55

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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.