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Finding the Third Proportional to 30,186,139 and 47,072,811

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Solution

The third proportional to 30,186,139 and 47,072,811 is: 73,406,192.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,186,139 : 47,072,811 = 47,072,811 : x
  2. Step 2: Convert to fraction form
    30,186,139/47,072,811 = 47,072,811/x
  3. Step 3: Cross multiply
    30,186,139x = 47,072,811 × 47,072,811
  4. Step 4: Simplify right side
    30,186,139x = 2,215,849,535,441,721
  5. Step 5: Solve for x
    x = 2,215,849,535,441,721/30,186,139
  6. Step 6: Final answer
    x = 73,406,192.67

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.