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Finding the Fourth Proportional to 90,838,615.20, 136,257,922.80 and 90,838,615.20

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Solution

The fourth proportional to 90,838,615.20, 136,257,922.80 and 90,838,615.20 is: 136,257,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,838,615.20 : 136,257,922.80 = 90,838,615.20 : x
  2. Step 2: Convert to fraction form
    90,838,615.20/136,257,922.80 = 90,838,615.20/x
  3. Step 3: Cross multiply
    90,838,615.20x = 136,257,922.80 × 90,838,615.20
  4. Step 4: Simplify right side
    90,838,615.20x = 12,377,481,017,180,508
  5. Step 5: Solve for x
    x = 12,377,481,017,180,508/90,838,615.20
  6. Step 6: Final answer
    x = 136,257,922.80

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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.