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Finding the Fourth Proportional to 1,526.81, 2,290.50 and 705.65

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Solution

The fourth proportional to 1,526.81, 2,290.50 and 705.65 is: 1,058.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.81 : 2,290.50 = 705.65 : x
  2. Step 2: Convert to fraction form
    1,526.81/2,290.50 = 705.65/x
  3. Step 3: Cross multiply
    1,526.81x = 2,290.50 × 705.65
  4. Step 4: Simplify right side
    1,526.81x = 1,616,279.87
  5. Step 5: Solve for x
    x = 1,616,279.87/1,526.81
  6. Step 6: Final answer
    x = 1,058.60

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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.