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Finding the Fourth Proportional to 251,718.93, 347,365.53 and 136,999.80

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Solution

The fourth proportional to 251,718.93, 347,365.53 and 136,999.80 is: 189,056.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,718.93 : 347,365.53 = 136,999.80 : x
  2. Step 2: Convert to fraction form
    251,718.93/347,365.53 = 136,999.80/x
  3. Step 3: Cross multiply
    251,718.93x = 347,365.53 × 136,999.80
  4. Step 4: Simplify right side
    251,718.93x = 47,589,008,136.89
  5. Step 5: Solve for x
    x = 47,589,008,136.89/251,718.93
  6. Step 6: Final answer
    x = 189,056.14

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1.5x scale

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.