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Finding the Fourth Proportional to 7,266,503.80, 10,899,755.70 and 7,109,039.80

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Solution

The fourth proportional to 7,266,503.80, 10,899,755.70 and 7,109,039.80 is: 10,663,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,266,503.80 : 10,899,755.70 = 7,109,039.80 : x
  2. Step 2: Convert to fraction form
    7,266,503.80/10,899,755.70 = 7,109,039.80/x
  3. Step 3: Cross multiply
    7,266,503.80x = 10,899,755.70 × 7,109,039.80
  4. Step 4: Simplify right side
    7,266,503.80x = 77,486,797,081,576.86
  5. Step 5: Solve for x
    x = 77,486,797,081,576.86/7,266,503.80
  6. Step 6: Final answer
    x = 10,663,559.70

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Double scale
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Similar ratio
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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.