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Finding the Fourth Proportional to 1,061.72, 1,465.19 and 589.62

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Solution

The fourth proportional to 1,061.72, 1,465.19 and 589.62 is: 813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.72 : 1,465.19 = 589.62 : x
  2. Step 2: Convert to fraction form
    1,061.72/1,465.19 = 589.62/x
  3. Step 3: Cross multiply
    1,061.72x = 1,465.19 × 589.62
  4. Step 4: Simplify right side
    1,061.72x = 863,902.38
  5. Step 5: Solve for x
    x = 863,902.38/1,061.72
  6. Step 6: Final answer
    x = 813.68

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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.