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Finding the Fourth Proportional to 7,242.99, 9,996.48 and 4,259.55

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Solution

The fourth proportional to 7,242.99, 9,996.48 and 4,259.55 is: 5,878.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.99 : 9,996.48 = 4,259.55 : x
  2. Step 2: Convert to fraction form
    7,242.99/9,996.48 = 4,259.55/x
  3. Step 3: Cross multiply
    7,242.99x = 9,996.48 × 4,259.55
  4. Step 4: Simplify right side
    7,242.99x = 42,580,506.38
  5. Step 5: Solve for x
    x = 42,580,506.38/7,242.99
  6. Step 6: Final answer
    x = 5,878.86

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Half scale
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Double scale
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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.