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Finding the Fourth Proportional to 608,990,465.70, 913,485,698.55 and 148,922,648.10

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Solution

The fourth proportional to 608,990,465.70, 913,485,698.55 and 148,922,648.10 is: 223,383,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,990,465.70 : 913,485,698.55 = 148,922,648.10 : x
  2. Step 2: Convert to fraction form
    608,990,465.70/913,485,698.55 = 148,922,648.10/x
  3. Step 3: Cross multiply
    608,990,465.70x = 913,485,698.55 × 148,922,648.10
  4. Step 4: Simplify right side
    608,990,465.70x = 136,038,709,229,544,320
  5. Step 5: Solve for x
    x = 136,038,709,229,544,320/608,990,465.70
  6. Step 6: Final answer
    x = 223,383,972.15

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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.