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Finding the Fourth Proportional to 1,049.76, 1,574.92 and 530.08

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Solution

The fourth proportional to 1,049.76, 1,574.92 and 530.08 is: 795.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.76 : 1,574.92 = 530.08 : x
  2. Step 2: Convert to fraction form
    1,049.76/1,574.92 = 530.08/x
  3. Step 3: Cross multiply
    1,049.76x = 1,574.92 × 530.08
  4. Step 4: Simplify right side
    1,049.76x = 834,833.59
  5. Step 5: Solve for x
    x = 834,833.59/1,049.76
  6. Step 6: Final answer
    x = 795.26

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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.