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Finding the Fourth Proportional to 409,993.47, 614,994.34 and 143,760.40

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Solution

The fourth proportional to 409,993.47, 614,994.34 and 143,760.40 is: 215,642.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,993.47 : 614,994.34 = 143,760.40 : x
  2. Step 2: Convert to fraction form
    409,993.47/614,994.34 = 143,760.40/x
  3. Step 3: Cross multiply
    409,993.47x = 614,994.34 × 143,760.40
  4. Step 4: Simplify right side
    409,993.47x = 88,411,832,316.14
  5. Step 5: Solve for x
    x = 88,411,832,316.14/409,993.47
  6. Step 6: Final answer
    x = 215,642.05

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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.