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Finding the Fourth Proportional to 190,598, 263,026.47 and 105,715.28

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Solution

The fourth proportional to 190,598, 263,026.47 and 105,715.28 is: 145,887.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,598 : 263,026.47 = 105,715.28 : x
  2. Step 2: Convert to fraction form
    190,598/263,026.47 = 105,715.28/x
  3. Step 3: Cross multiply
    190,598x = 263,026.47 × 105,715.28
  4. Step 4: Simplify right side
    190,598x = 27,805,916,923.46
  5. Step 5: Solve for x
    x = 27,805,916,923.46/190,598
  6. Step 6: Final answer
    x = 145,887.77

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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.