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Finding the Fourth Proportional to 172,972.16, 238,701.44 and 93,484.16

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Solution

The fourth proportional to 172,972.16, 238,701.44 and 93,484.16 is: 129,008.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,972.16 : 238,701.44 = 93,484.16 : x
  2. Step 2: Convert to fraction form
    172,972.16/238,701.44 = 93,484.16/x
  3. Step 3: Cross multiply
    172,972.16x = 238,701.44 × 93,484.16
  4. Step 4: Simplify right side
    172,972.16x = 22,314,803,609.19
  5. Step 5: Solve for x
    x = 22,314,803,609.19/172,972.16
  6. Step 6: Final answer
    x = 129,008.06

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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.