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Finding the Fourth Proportional to 61,690.40, 92,557.20 and 26,655.20

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Solution

The fourth proportional to 61,690.40, 92,557.20 and 26,655.20 is: 39,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.40 : 92,557.20 = 26,655.20 : x
  2. Step 2: Convert to fraction form
    61,690.40/92,557.20 = 26,655.20/x
  3. Step 3: Cross multiply
    61,690.40x = 92,557.20 × 26,655.20
  4. Step 4: Simplify right side
    61,690.40x = 2,467,130,677.44
  5. Step 5: Solve for x
    x = 2,467,130,677.44/61,690.40
  6. Step 6: Final answer
    x = 39,992.13

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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.