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Finding the Fourth Proportional to 1,133.69, 1,700.55 and 614.16

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Solution

The fourth proportional to 1,133.69, 1,700.55 and 614.16 is: 921.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.69 : 1,700.55 = 614.16 : x
  2. Step 2: Convert to fraction form
    1,133.69/1,700.55 = 614.16/x
  3. Step 3: Cross multiply
    1,133.69x = 1,700.55 × 614.16
  4. Step 4: Simplify right side
    1,133.69x = 1,044,409.79
  5. Step 5: Solve for x
    x = 1,044,409.79/1,133.69
  6. Step 6: Final answer
    x = 921.25

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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.