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Finding the Fourth Proportional to 70,020.65, 104,962.64 and 27,888.10

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Solution

The fourth proportional to 70,020.65, 104,962.64 and 27,888.10 is: 41,804.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,020.65 : 104,962.64 = 27,888.10 : x
  2. Step 2: Convert to fraction form
    70,020.65/104,962.64 = 27,888.10/x
  3. Step 3: Cross multiply
    70,020.65x = 104,962.64 × 27,888.10
  4. Step 4: Simplify right side
    70,020.65x = 2,927,208,198.74
  5. Step 5: Solve for x
    x = 2,927,208,198.74/70,020.65
  6. Step 6: Final answer
    x = 41,804.93

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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.