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Finding the Fourth Proportional to 896,990,651.90, 1,345,485,977.85 and 655,125,947.90

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Solution

The fourth proportional to 896,990,651.90, 1,345,485,977.85 and 655,125,947.90 is: 982,688,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,990,651.90 : 1,345,485,977.85 = 655,125,947.90 : x
  2. Step 2: Convert to fraction form
    896,990,651.90/1,345,485,977.85 = 655,125,947.90/x
  3. Step 3: Cross multiply
    896,990,651.90x = 1,345,485,977.85 × 655,125,947.90
  4. Step 4: Simplify right side
    896,990,651.90x = 881,462,776,625,139,584
  5. Step 5: Solve for x
    x = 881,462,776,625,139,584/896,990,651.90
  6. Step 6: Final answer
    x = 982,688,921.85

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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.