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Finding the Fourth Proportional to 61,090.79, 91,640.28 and 16,717.93

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Solution

The fourth proportional to 61,090.79, 91,640.28 and 16,717.93 is: 25,078.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,090.79 : 91,640.28 = 16,717.93 : x
  2. Step 2: Convert to fraction form
    61,090.79/91,640.28 = 16,717.93/x
  3. Step 3: Cross multiply
    61,090.79x = 91,640.28 × 16,717.93
  4. Step 4: Simplify right side
    61,090.79x = 1,532,035,328.02
  5. Step 5: Solve for x
    x = 1,532,035,328.02/61,090.79
  6. Step 6: Final answer
    x = 25,078.01

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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.