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Finding the Fourth Proportional to 282,168.81, 389,404.18 and 154,848.96

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Solution

The fourth proportional to 282,168.81, 389,404.18 and 154,848.96 is: 213,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,168.81 : 389,404.18 = 154,848.96 : x
  2. Step 2: Convert to fraction form
    282,168.81/389,404.18 = 154,848.96/x
  3. Step 3: Cross multiply
    282,168.81x = 389,404.18 × 154,848.96
  4. Step 4: Simplify right side
    282,168.81x = 60,298,830,732.75
  5. Step 5: Solve for x
    x = 60,298,830,732.75/282,168.81
  6. Step 6: Final answer
    x = 213,697.72

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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.