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Finding the Fourth Proportional to 81,688,515.90, 114,650,900.40 and 81,688,515.90

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Solution

The fourth proportional to 81,688,515.90, 114,650,900.40 and 81,688,515.90 is: 114,650,900.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688,515.90 : 114,650,900.40 = 81,688,515.90 : x
  2. Step 2: Convert to fraction form
    81,688,515.90/114,650,900.40 = 81,688,515.90/x
  3. Step 3: Cross multiply
    81,688,515.90x = 114,650,900.40 × 81,688,515.90
  4. Step 4: Simplify right side
    81,688,515.90x = 9,365,661,900,274,718
  5. Step 5: Solve for x
    x = 9,365,661,900,274,718/81,688,515.90
  6. Step 6: Final answer
    x = 114,650,900.40

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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.