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Finding the Fourth Proportional to 42,798.78, 59,083.02 and 28,482.44

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Solution

The fourth proportional to 42,798.78, 59,083.02 and 28,482.44 is: 39,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,798.78 : 59,083.02 = 28,482.44 : x
  2. Step 2: Convert to fraction form
    42,798.78/59,083.02 = 28,482.44/x
  3. Step 3: Cross multiply
    42,798.78x = 59,083.02 × 28,482.44
  4. Step 4: Simplify right side
    42,798.78x = 1,682,828,276.75
  5. Step 5: Solve for x
    x = 1,682,828,276.75/42,798.78
  6. Step 6: Final answer
    x = 39,319.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.