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Finding the Fourth Proportional to 2,041.64, 3,061.34 and 945.40

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Solution

The fourth proportional to 2,041.64, 3,061.34 and 945.40 is: 1,417.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,041.64 : 3,061.34 = 945.40 : x
  2. Step 2: Convert to fraction form
    2,041.64/3,061.34 = 945.40/x
  3. Step 3: Cross multiply
    2,041.64x = 3,061.34 × 945.40
  4. Step 4: Simplify right side
    2,041.64x = 2,894,190.84
  5. Step 5: Solve for x
    x = 2,894,190.84/2,041.64
  6. Step 6: Final answer
    x = 1,417.58

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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.