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Finding the Fourth Proportional to 223,402, 308,294.76 and 127,940.28

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Solution

The fourth proportional to 223,402, 308,294.76 and 127,940.28 is: 176,557.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,402 : 308,294.76 = 127,940.28 : x
  2. Step 2: Convert to fraction form
    223,402/308,294.76 = 127,940.28/x
  3. Step 3: Cross multiply
    223,402x = 308,294.76 × 127,940.28
  4. Step 4: Simplify right side
    223,402x = 39,443,317,916.93
  5. Step 5: Solve for x
    x = 39,443,317,916.93/223,402
  6. Step 6: Final answer
    x = 176,557.59

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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.