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Finding the Fourth Proportional to 18,455,428.70, 27,683,143.06 and 18,455,428.70

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Solution

The fourth proportional to 18,455,428.70, 27,683,143.06 and 18,455,428.70 is: 27,683,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455,428.70 : 27,683,143.06 = 18,455,428.70 : x
  2. Step 2: Convert to fraction form
    18,455,428.70/27,683,143.06 = 18,455,428.70/x
  3. Step 3: Cross multiply
    18,455,428.70x = 27,683,143.06 × 18,455,428.70
  4. Step 4: Simplify right side
    18,455,428.70x = 510,904,272,935,729.75
  5. Step 5: Solve for x
    x = 510,904,272,935,729.75/18,455,428.70
  6. Step 6: Final answer
    x = 27,683,143.06

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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.