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Finding the Fourth Proportional to 6,699.42, 9,241.10 and 4,430.76

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Solution

The fourth proportional to 6,699.42, 9,241.10 and 4,430.76 is: 6,111.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,699.42 : 9,241.10 = 4,430.76 : x
  2. Step 2: Convert to fraction form
    6,699.42/9,241.10 = 4,430.76/x
  3. Step 3: Cross multiply
    6,699.42x = 9,241.10 × 4,430.76
  4. Step 4: Simplify right side
    6,699.42x = 40,945,096.24
  5. Step 5: Solve for x
    x = 40,945,096.24/6,699.42
  6. Step 6: Final answer
    x = 6,111.74

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Half scale
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Double scale
Find fourth proportional to 6,700.42, 9,242.48 and 4,431.76
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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.