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Finding the Fourth Proportional to 427,596.96, 640,899.72 and 161,186.88

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Solution

The fourth proportional to 427,596.96, 640,899.72 and 161,186.88 is: 241,593.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,596.96 : 640,899.72 = 161,186.88 : x
  2. Step 2: Convert to fraction form
    427,596.96/640,899.72 = 161,186.88/x
  3. Step 3: Cross multiply
    427,596.96x = 640,899.72 × 161,186.88
  4. Step 4: Simplify right side
    427,596.96x = 103,304,626,259.67
  5. Step 5: Solve for x
    x = 103,304,626,259.67/427,596.96
  6. Step 6: Final answer
    x = 241,593.45

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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.