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Finding the Fourth Proportional to 940,339,969.70, 1,410,509,954.55 and 681,007,259.30

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Solution

The fourth proportional to 940,339,969.70, 1,410,509,954.55 and 681,007,259.30 is: 1,021,510,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,339,969.70 : 1,410,509,954.55 = 681,007,259.30 : x
  2. Step 2: Convert to fraction form
    940,339,969.70/1,410,509,954.55 = 681,007,259.30/x
  3. Step 3: Cross multiply
    940,339,969.70x = 1,410,509,954.55 × 681,007,259.30
  4. Step 4: Simplify right side
    940,339,969.70x = 960,567,518,363,462,912
  5. Step 5: Solve for x
    x = 960,567,518,363,462,912/940,339,969.70
  6. Step 6: Final answer
    x = 1,021,510,888.95

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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.