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Finding the Fourth Proportional to 65,809.72, 90,817.14 and 35,595.01

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Solution

The fourth proportional to 65,809.72, 90,817.14 and 35,595.01 is: 49,120.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,809.72 : 90,817.14 = 35,595.01 : x
  2. Step 2: Convert to fraction form
    65,809.72/90,817.14 = 35,595.01/x
  3. Step 3: Cross multiply
    65,809.72x = 90,817.14 × 35,595.01
  4. Step 4: Simplify right side
    65,809.72x = 3,232,637,006.47
  5. Step 5: Solve for x
    x = 3,232,637,006.47/65,809.72
  6. Step 6: Final answer
    x = 49,120.97

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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.