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Finding the Fourth Proportional to 2,041.48, 2,816.34 and 1,213

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Solution

The fourth proportional to 2,041.48, 2,816.34 and 1,213 is: 1,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,041.48 : 2,816.34 = 1,213 : x
  2. Step 2: Convert to fraction form
    2,041.48/2,816.34 = 1,213/x
  3. Step 3: Cross multiply
    2,041.48x = 2,816.34 × 1,213
  4. Step 4: Simplify right side
    2,041.48x = 3,416,220.42
  5. Step 5: Solve for x
    x = 3,416,220.42/2,041.48
  6. Step 6: Final answer
    x = 1,673.40

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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.