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Finding the Fourth Proportional to 202,561.09, 279,520.26 and 111,916.32

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Solution

The fourth proportional to 202,561.09, 279,520.26 and 111,916.32 is: 154,436.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,561.09 : 279,520.26 = 111,916.32 : x
  2. Step 2: Convert to fraction form
    202,561.09/279,520.26 = 111,916.32/x
  3. Step 3: Cross multiply
    202,561.09x = 279,520.26 × 111,916.32
  4. Step 4: Simplify right side
    202,561.09x = 31,282,878,864.64
  5. Step 5: Solve for x
    x = 31,282,878,864.64/202,561.09
  6. Step 6: Final answer
    x = 154,436.76

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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.