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Finding the Fourth Proportional to 216,781.02, 325,090.80 and 74,586.60

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Solution

The fourth proportional to 216,781.02, 325,090.80 and 74,586.60 is: 111,852.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,781.02 : 325,090.80 = 74,586.60 : x
  2. Step 2: Convert to fraction form
    216,781.02/325,090.80 = 74,586.60/x
  3. Step 3: Cross multiply
    216,781.02x = 325,090.80 × 74,586.60
  4. Step 4: Simplify right side
    216,781.02x = 24,247,417,463.28
  5. Step 5: Solve for x
    x = 24,247,417,463.28/216,781.02
  6. Step 6: Final answer
    x = 111,852.12

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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.