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Finding the Fourth Proportional to 173,278, 239,124.36 and 93,790

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Solution

The fourth proportional to 173,278, 239,124.36 and 93,790 is: 129,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,278 : 239,124.36 = 93,790 : x
  2. Step 2: Convert to fraction form
    173,278/239,124.36 = 93,790/x
  3. Step 3: Cross multiply
    173,278x = 239,124.36 × 93,790
  4. Step 4: Simplify right side
    173,278x = 22,427,473,724.40
  5. Step 5: Solve for x
    x = 22,427,473,724.40/173,278
  6. Step 6: Final answer
    x = 129,430.59

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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.