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Finding the Fourth Proportional to 172,908.66, 238,609.18 and 96,430.08

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Solution

The fourth proportional to 172,908.66, 238,609.18 and 96,430.08 is: 133,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,908.66 : 238,609.18 = 96,430.08 : x
  2. Step 2: Convert to fraction form
    172,908.66/238,609.18 = 96,430.08/x
  3. Step 3: Cross multiply
    172,908.66x = 238,609.18 × 96,430.08
  4. Step 4: Simplify right side
    172,908.66x = 23,009,102,316.13
  5. Step 5: Solve for x
    x = 23,009,102,316.13/172,908.66
  6. Step 6: Final answer
    x = 133,070.85

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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.