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Finding the Fourth Proportional to 119,243.78, 164,553.10 and 65,528.78

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Solution

The fourth proportional to 119,243.78, 164,553.10 and 65,528.78 is: 90,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,243.78 : 164,553.10 = 65,528.78 : x
  2. Step 2: Convert to fraction form
    119,243.78/164,553.10 = 65,528.78/x
  3. Step 3: Cross multiply
    119,243.78x = 164,553.10 × 65,528.78
  4. Step 4: Simplify right side
    119,243.78x = 10,782,963,888.22
  5. Step 5: Solve for x
    x = 10,782,963,888.22/119,243.78
  6. Step 6: Final answer
    x = 90,427.89

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1.5x scale

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.