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Finding the Third Proportional to 31,490,921 and 47,072,437

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Solution

The third proportional to 31,490,921 and 47,072,437 is: 70,363,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490,921 : 47,072,437 = 47,072,437 : x
  2. Step 2: Convert to fraction form
    31,490,921/47,072,437 = 47,072,437/x
  3. Step 3: Cross multiply
    31,490,921x = 47,072,437 × 47,072,437
  4. Step 4: Simplify right side
    31,490,921x = 2,215,814,325,118,969
  5. Step 5: Solve for x
    x = 2,215,814,325,118,969/31,490,921
  6. Step 6: Final answer
    x = 70,363,592.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.