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Finding the Fourth Proportional to 1,374.04, 2,061.42 and 508.60

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Solution

The fourth proportional to 1,374.04, 2,061.42 and 508.60 is: 763.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374.04 : 2,061.42 = 508.60 : x
  2. Step 2: Convert to fraction form
    1,374.04/2,061.42 = 508.60/x
  3. Step 3: Cross multiply
    1,374.04x = 2,061.42 × 508.60
  4. Step 4: Simplify right side
    1,374.04x = 1,048,438.21
  5. Step 5: Solve for x
    x = 1,048,438.21/1,374.04
  6. Step 6: Final answer
    x = 763.03

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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.