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Finding the Fourth Proportional to 1,241.04, 1,861.50 and 753.06

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Solution

The fourth proportional to 1,241.04, 1,861.50 and 753.06 is: 1,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.04 : 1,861.50 = 753.06 : x
  2. Step 2: Convert to fraction form
    1,241.04/1,861.50 = 753.06/x
  3. Step 3: Cross multiply
    1,241.04x = 1,861.50 × 753.06
  4. Step 4: Simplify right side
    1,241.04x = 1,401,821.19
  5. Step 5: Solve for x
    x = 1,401,821.19/1,241.04
  6. Step 6: Final answer
    x = 1,129.55

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.