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Finding the Fourth Proportional to 172,573.34, 238,094.12 and 100,902.60

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Solution

The fourth proportional to 172,573.34, 238,094.12 and 100,902.60 is: 139,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,573.34 : 238,094.12 = 100,902.60 : x
  2. Step 2: Convert to fraction form
    172,573.34/238,094.12 = 100,902.60/x
  3. Step 3: Cross multiply
    172,573.34x = 238,094.12 × 100,902.60
  4. Step 4: Simplify right side
    172,573.34x = 24,024,315,248.20
  5. Step 5: Solve for x
    x = 24,024,315,248.20/172,573.34
  6. Step 6: Final answer
    x = 139,212.21

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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.