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Finding the Fourth Proportional to 384,436.17, 530,519.81 and 212,365.98

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Solution

The fourth proportional to 384,436.17, 530,519.81 and 212,365.98 is: 293,063.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,436.17 : 530,519.81 = 212,365.98 : x
  2. Step 2: Convert to fraction form
    384,436.17/530,519.81 = 212,365.98/x
  3. Step 3: Cross multiply
    384,436.17x = 530,519.81 × 212,365.98
  4. Step 4: Simplify right side
    384,436.17x = 112,664,358,298.23
  5. Step 5: Solve for x
    x = 112,664,358,298.23/384,436.17
  6. Step 6: Final answer
    x = 293,063.89

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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.