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Finding the Fourth Proportional to 70,278.84, 104,968.80 and 63,605.16

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Solution

The fourth proportional to 70,278.84, 104,968.80 and 63,605.16 is: 95,000.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,278.84 : 104,968.80 = 63,605.16 : x
  2. Step 2: Convert to fraction form
    70,278.84/104,968.80 = 63,605.16/x
  3. Step 3: Cross multiply
    70,278.84x = 104,968.80 × 63,605.16
  4. Step 4: Simplify right side
    70,278.84x = 6,676,557,319.01
  5. Step 5: Solve for x
    x = 6,676,557,319.01/70,278.84
  6. Step 6: Final answer
    x = 95,000.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.