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Finding the Fourth Proportional to 161,697.88, 221,527.12 and 155,637.44

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Solution

The fourth proportional to 161,697.88, 221,527.12 and 155,637.44 is: 213,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,697.88 : 221,527.12 = 155,637.44 : x
  2. Step 2: Convert to fraction form
    161,697.88/221,527.12 = 155,637.44/x
  3. Step 3: Cross multiply
    161,697.88x = 221,527.12 × 155,637.44
  4. Step 4: Simplify right side
    161,697.88x = 34,477,913,847.37
  5. Step 5: Solve for x
    x = 34,477,913,847.37/161,697.88
  6. Step 6: Final answer
    x = 213,224.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.