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Finding the Fourth Proportional to 1,059.96, 1,588.98 and 410.21

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Solution

The fourth proportional to 1,059.96, 1,588.98 and 410.21 is: 614.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.96 : 1,588.98 = 410.21 : x
  2. Step 2: Convert to fraction form
    1,059.96/1,588.98 = 410.21/x
  3. Step 3: Cross multiply
    1,059.96x = 1,588.98 × 410.21
  4. Step 4: Simplify right side
    1,059.96x = 651,809.98
  5. Step 5: Solve for x
    x = 651,809.98/1,059.96
  6. Step 6: Final answer
    x = 614.94

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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.