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Finding the Fourth Proportional to 172,817.18, 259,261.05 and 97,970.75

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Solution

The fourth proportional to 172,817.18, 259,261.05 and 97,970.75 is: 146,976.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,817.18 : 259,261.05 = 97,970.75 : x
  2. Step 2: Convert to fraction form
    172,817.18/259,261.05 = 97,970.75/x
  3. Step 3: Cross multiply
    172,817.18x = 259,261.05 × 97,970.75
  4. Step 4: Simplify right side
    172,817.18x = 25,399,999,557.60
  5. Step 5: Solve for x
    x = 25,399,999,557.60/172,817.18
  6. Step 6: Final answer
    x = 146,976.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.