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Finding the Fourth Proportional to 407,539.12, 611,170.24 and 141,237.40

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Solution

The fourth proportional to 407,539.12, 611,170.24 and 141,237.40 is: 211,808.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,539.12 : 611,170.24 = 141,237.40 : x
  2. Step 2: Convert to fraction form
    407,539.12/611,170.24 = 141,237.40/x
  3. Step 3: Cross multiply
    407,539.12x = 611,170.24 × 141,237.40
  4. Step 4: Simplify right side
    407,539.12x = 86,320,095,654.98
  5. Step 5: Solve for x
    x = 86,320,095,654.98/407,539.12
  6. Step 6: Final answer
    x = 211,808.12

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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.