Home / 12,781,371,777.20-19,172,057,665.80-7,345,553,793.20

Finding the Fourth Proportional to 12,781,371,777.20, 19,172,057,665.80 and 7,345,553,793.20

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Solution

The fourth proportional to 12,781,371,777.20, 19,172,057,665.80 and 7,345,553,793.20 is: 11,018,330,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781,371,777.20 : 19,172,057,665.80 = 7,345,553,793.20 : x
  2. Step 2: Convert to fraction form
    12,781,371,777.20/19,172,057,665.80 = 7,345,553,793.20/x
  3. Step 3: Cross multiply
    12,781,371,777.20x = 19,172,057,665.80 × 7,345,553,793.20
  4. Step 4: Simplify right side
    12,781,371,777.20x = 140,829,380,910,466,318,336
  5. Step 5: Solve for x
    x = 140,829,380,910,466,318,336/12,781,371,777.20
  6. Step 6: Final answer
    x = 11,018,330,689.80

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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.