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Finding the Fourth Proportional to 874,502,608.75, 1,311,753,913.22 and 292,236,854.31

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Solution

The fourth proportional to 874,502,608.75, 1,311,753,913.22 and 292,236,854.31 is: 438,355,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,502,608.75 : 1,311,753,913.22 = 292,236,854.31 : x
  2. Step 2: Convert to fraction form
    874,502,608.75/1,311,753,913.22 = 292,236,854.31/x
  3. Step 3: Cross multiply
    874,502,608.75x = 1,311,753,913.22 × 292,236,854.31
  4. Step 4: Simplify right side
    874,502,608.75x = 383,342,837,228,976,128
  5. Step 5: Solve for x
    x = 383,342,837,228,976,128/874,502,608.75
  6. Step 6: Final answer
    x = 438,355,281.50

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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.