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Finding the Fourth Proportional to 109,980.80, 164,976.60 and 57,492.80

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Solution

The fourth proportional to 109,980.80, 164,976.60 and 57,492.80 is: 86,242.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,980.80 : 164,976.60 = 57,492.80 : x
  2. Step 2: Convert to fraction form
    109,980.80/164,976.60 = 57,492.80/x
  3. Step 3: Cross multiply
    109,980.80x = 164,976.60 × 57,492.80
  4. Step 4: Simplify right side
    109,980.80x = 9,484,966,668.48
  5. Step 5: Solve for x
    x = 9,484,966,668.48/109,980.80
  6. Step 6: Final answer
    x = 86,242.02

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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.