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Finding the Fourth Proportional to 65,792.19, 90,789.78 and 37,111.01

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Solution

The fourth proportional to 65,792.19, 90,789.78 and 37,111.01 is: 51,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,792.19 : 90,789.78 = 37,111.01 : x
  2. Step 2: Convert to fraction form
    65,792.19/90,789.78 = 37,111.01/x
  3. Step 3: Cross multiply
    65,792.19x = 90,789.78 × 37,111.01
  4. Step 4: Simplify right side
    65,792.19x = 3,369,299,979.53
  5. Step 5: Solve for x
    x = 3,369,299,979.53/65,792.19
  6. Step 6: Final answer
    x = 51,211.25

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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.