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Finding the Fourth Proportional to 5,707.72, 7,876.02 and 3,223.72

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Solution

The fourth proportional to 5,707.72, 7,876.02 and 3,223.72 is: 4,448.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,707.72 : 7,876.02 = 3,223.72 : x
  2. Step 2: Convert to fraction form
    5,707.72/7,876.02 = 3,223.72/x
  3. Step 3: Cross multiply
    5,707.72x = 7,876.02 × 3,223.72
  4. Step 4: Simplify right side
    5,707.72x = 25,390,083.19
  5. Step 5: Solve for x
    x = 25,390,083.19/5,707.72
  6. Step 6: Final answer
    x = 4,448.38

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Find fourth proportional to 2,853.86, 3,938.01 and 1,611.86
Half scale
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Double scale
Find fourth proportional to 5,708.72, 7,877.40 and 3,224.72
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1.5x scale

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.