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Finding the Fourth Proportional to 42,466.79, 63,699.95 and 10,876.79

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Solution

The fourth proportional to 42,466.79, 63,699.95 and 10,876.79 is: 16,315.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,466.79 : 63,699.95 = 10,876.79 : x
  2. Step 2: Convert to fraction form
    42,466.79/63,699.95 = 10,876.79/x
  3. Step 3: Cross multiply
    42,466.79x = 63,699.95 × 10,876.79
  4. Step 4: Simplify right side
    42,466.79x = 692,850,979.16
  5. Step 5: Solve for x
    x = 692,850,979.16/42,466.79
  6. Step 6: Final answer
    x = 16,315.12

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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.