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Finding the Fourth Proportional to 61,389, 92,097.79 and 19,266.77

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Solution

The fourth proportional to 61,389, 92,097.79 and 19,266.77 is: 28,904.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,389 : 92,097.79 = 19,266.77 : x
  2. Step 2: Convert to fraction form
    61,389/92,097.79 = 19,266.77/x
  3. Step 3: Cross multiply
    61,389x = 92,097.79 × 19,266.77
  4. Step 4: Simplify right side
    61,389x = 1,774,427,119.52
  5. Step 5: Solve for x
    x = 1,774,427,119.52/61,389
  6. Step 6: Final answer
    x = 28,904.64

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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.