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Finding the Fourth Proportional to 202,220.70, 303,345.45 and 61,979.10

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Solution

The fourth proportional to 202,220.70, 303,345.45 and 61,979.10 is: 92,973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,220.70 : 303,345.45 = 61,979.10 : x
  2. Step 2: Convert to fraction form
    202,220.70/303,345.45 = 61,979.10/x
  3. Step 3: Cross multiply
    202,220.70x = 303,345.45 × 61,979.10
  4. Step 4: Simplify right side
    202,220.70x = 18,801,077,980.10
  5. Step 5: Solve for x
    x = 18,801,077,980.10/202,220.70
  6. Step 6: Final answer
    x = 92,973.06

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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.