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Finding the Fourth Proportional to 3,574.13, 5,361.56 and 977.06

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Solution

The fourth proportional to 3,574.13, 5,361.56 and 977.06 is: 1,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,574.13 : 5,361.56 = 977.06 : x
  2. Step 2: Convert to fraction form
    3,574.13/5,361.56 = 977.06/x
  3. Step 3: Cross multiply
    3,574.13x = 5,361.56 × 977.06
  4. Step 4: Simplify right side
    3,574.13x = 5,238,581.66
  5. Step 5: Solve for x
    x = 5,238,581.66/3,574.13
  6. Step 6: Final answer
    x = 1,465.70

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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.