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Finding the Fourth Proportional to 61,690.74, 92,302.80 and 57,958.26

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Solution

The fourth proportional to 61,690.74, 92,302.80 and 57,958.26 is: 86,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.74 : 92,302.80 = 57,958.26 : x
  2. Step 2: Convert to fraction form
    61,690.74/92,302.80 = 57,958.26/x
  3. Step 3: Cross multiply
    61,690.74x = 92,302.80 × 57,958.26
  4. Step 4: Simplify right side
    61,690.74x = 5,349,709,681.13
  5. Step 5: Solve for x
    x = 5,349,709,681.13/61,690.74
  6. Step 6: Final answer
    x = 86,718.20

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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.