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Finding the Fourth Proportional to 283,203.83, 390,813.81 and 154,144.82

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Solution

The fourth proportional to 283,203.83, 390,813.81 and 154,144.82 is: 212,715.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,203.83 : 390,813.81 = 154,144.82 : x
  2. Step 2: Convert to fraction form
    283,203.83/390,813.81 = 154,144.82/x
  3. Step 3: Cross multiply
    283,203.83x = 390,813.81 × 154,144.82
  4. Step 4: Simplify right side
    283,203.83x = 60,241,924,395.96
  5. Step 5: Solve for x
    x = 60,241,924,395.96/283,203.83
  6. Step 6: Final answer
    x = 212,715.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.