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Finding the Fourth Proportional to 4,707.70, 7,061.17 and 1,587.64

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Solution

The fourth proportional to 4,707.70, 7,061.17 and 1,587.64 is: 2,381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,707.70 : 7,061.17 = 1,587.64 : x
  2. Step 2: Convert to fraction form
    4,707.70/7,061.17 = 1,587.64/x
  3. Step 3: Cross multiply
    4,707.70x = 7,061.17 × 1,587.64
  4. Step 4: Simplify right side
    4,707.70x = 11,210,595.94
  5. Step 5: Solve for x
    x = 11,210,595.94/4,707.70
  6. Step 6: Final answer
    x = 2,381.33

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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.