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Finding the Fourth Proportional to 1,036.26, 1,430.00 and 564.14

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Solution

The fourth proportional to 1,036.26, 1,430.00 and 564.14 is: 778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.26 : 1,430.00 = 564.14 : x
  2. Step 2: Convert to fraction form
    1,036.26/1,430.00 = 564.14/x
  3. Step 3: Cross multiply
    1,036.26x = 1,430.00 × 564.14
  4. Step 4: Simplify right side
    1,036.26x = 806,725.75
  5. Step 5: Solve for x
    x = 806,725.75/1,036.26
  6. Step 6: Final answer
    x = 778.50

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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.