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Finding the Fourth Proportional to 203,569.59, 280,927.59 and 111,688.26

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Solution

The fourth proportional to 203,569.59, 280,927.59 and 111,688.26 is: 154,130.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,569.59 : 280,927.59 = 111,688.26 : x
  2. Step 2: Convert to fraction form
    203,569.59/280,927.59 = 111,688.26/x
  3. Step 3: Cross multiply
    203,569.59x = 280,927.59 × 111,688.26
  4. Step 4: Simplify right side
    203,569.59x = 31,376,313,713.09
  5. Step 5: Solve for x
    x = 31,376,313,713.09/203,569.59
  6. Step 6: Final answer
    x = 154,130.65

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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.