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Finding the Fourth Proportional to 61,828.24, 92,670.72 and 28,478.32

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Solution

The fourth proportional to 61,828.24, 92,670.72 and 28,478.32 is: 42,684.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,828.24 : 92,670.72 = 28,478.32 : x
  2. Step 2: Convert to fraction form
    61,828.24/92,670.72 = 28,478.32/x
  3. Step 3: Cross multiply
    61,828.24x = 92,670.72 × 28,478.32
  4. Step 4: Simplify right side
    61,828.24x = 2,639,106,418.79
  5. Step 5: Solve for x
    x = 2,639,106,418.79/61,828.24
  6. Step 6: Final answer
    x = 42,684.48

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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.