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Finding the Fourth Proportional to 308,592.96, 425,838.18 and 172,603.32

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Solution

The fourth proportional to 308,592.96, 425,838.18 and 172,603.32 is: 238,181.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,592.96 : 425,838.18 = 172,603.32 : x
  2. Step 2: Convert to fraction form
    308,592.96/425,838.18 = 172,603.32/x
  3. Step 3: Cross multiply
    308,592.96x = 425,838.18 × 172,603.32
  4. Step 4: Simplify right side
    308,592.96x = 73,501,083,650.76
  5. Step 5: Solve for x
    x = 73,501,083,650.76/308,592.96
  6. Step 6: Final answer
    x = 238,181.34

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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.