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Finding the Fourth Proportional to 51,008,856.40, 71,563,564.40 and 51,008,856.40

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Solution

The fourth proportional to 51,008,856.40, 71,563,564.40 and 51,008,856.40 is: 71,563,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,008,856.40 : 71,563,564.40 = 51,008,856.40 : x
  2. Step 2: Convert to fraction form
    51,008,856.40/71,563,564.40 = 51,008,856.40/x
  3. Step 3: Cross multiply
    51,008,856.40x = 71,563,564.40 × 51,008,856.40
  4. Step 4: Simplify right side
    51,008,856.40x = 3,650,375,579,951,752.50
  5. Step 5: Solve for x
    x = 3,650,375,579,951,752.50/51,008,856.40
  6. Step 6: Final answer
    x = 71,563,564.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.