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Finding the Fourth Proportional to 1,035.38, 1,428.74 and 593.22

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Solution

The fourth proportional to 1,035.38, 1,428.74 and 593.22 is: 818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.38 : 1,428.74 = 593.22 : x
  2. Step 2: Convert to fraction form
    1,035.38/1,428.74 = 593.22/x
  3. Step 3: Cross multiply
    1,035.38x = 1,428.74 × 593.22
  4. Step 4: Simplify right side
    1,035.38x = 847,561.76
  5. Step 5: Solve for x
    x = 847,561.76/1,035.38
  6. Step 6: Final answer
    x = 818.60

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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.