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Finding the Fourth Proportional to 61,357.68, 92,038.56 and 16,980.72

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Solution

The fourth proportional to 61,357.68, 92,038.56 and 16,980.72 is: 25,471.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,357.68 : 92,038.56 = 16,980.72 : x
  2. Step 2: Convert to fraction form
    61,357.68/92,038.56 = 16,980.72/x
  3. Step 3: Cross multiply
    61,357.68x = 92,038.56 × 16,980.72
  4. Step 4: Simplify right side
    61,357.68x = 1,562,881,016.56
  5. Step 5: Solve for x
    x = 1,562,881,016.56/61,357.68
  6. Step 6: Final answer
    x = 25,471.64

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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.