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Finding the Fourth Proportional to 9,997.85, 13,798.96 and 5,751.77

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Solution

The fourth proportional to 9,997.85, 13,798.96 and 5,751.77 is: 7,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.85 : 13,798.96 = 5,751.77 : x
  2. Step 2: Convert to fraction form
    9,997.85/13,798.96 = 5,751.77/x
  3. Step 3: Cross multiply
    9,997.85x = 13,798.96 × 5,751.77
  4. Step 4: Simplify right side
    9,997.85x = 79,368,360.78
  5. Step 5: Solve for x
    x = 79,368,360.78/9,997.85
  6. Step 6: Final answer
    x = 7,938.55

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Half scale
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Double scale
Find fourth proportional to 9,998.85, 13,800.34 and 5,752.77
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.