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Finding the Fourth Proportional to 272,630,196.80, 408,934,797.60 and 90,877,374.80

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Solution

The fourth proportional to 272,630,196.80, 408,934,797.60 and 90,877,374.80 is: 136,312,562.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,630,196.80 : 408,934,797.60 = 90,877,374.80 : x
  2. Step 2: Convert to fraction form
    272,630,196.80/408,934,797.60 = 90,877,374.80/x
  3. Step 3: Cross multiply
    272,630,196.80x = 408,934,797.60 × 90,877,374.80
  4. Step 4: Simplify right side
    272,630,196.80x = 37,162,920,870,257,344
  5. Step 5: Solve for x
    x = 37,162,920,870,257,344/272,630,196.80
  6. Step 6: Final answer
    x = 136,312,562.98

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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.