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Finding the Fourth Proportional to 92,808.62, 127,979.08 and 55,075.58

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Solution

The fourth proportional to 92,808.62, 127,979.08 and 55,075.58 is: 75,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,808.62 : 127,979.08 = 55,075.58 : x
  2. Step 2: Convert to fraction form
    92,808.62/127,979.08 = 55,075.58/x
  3. Step 3: Cross multiply
    92,808.62x = 127,979.08 × 55,075.58
  4. Step 4: Simplify right side
    92,808.62x = 7,048,521,281.28
  5. Step 5: Solve for x
    x = 7,048,521,281.28/92,808.62
  6. Step 6: Final answer
    x = 75,946.84

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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.