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Finding the Fourth Proportional to 928,467,793.50, 1,283,123,919.22 and 760,939,820.22

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Solution

The fourth proportional to 928,467,793.50, 1,283,123,919.22 and 760,939,820.22 is: 1,051,603,611.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,467,793.50 : 1,283,123,919.22 = 760,939,820.22 : x
  2. Step 2: Convert to fraction form
    928,467,793.50/1,283,123,919.22 = 760,939,820.22/x
  3. Step 3: Cross multiply
    928,467,793.50x = 1,283,123,919.22 × 760,939,820.22
  4. Step 4: Simplify right side
    928,467,793.50x = 976,380,084,411,248,640
  5. Step 5: Solve for x
    x = 976,380,084,411,248,640/928,467,793.50
  6. Step 6: Final answer
    x = 1,051,603,611.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.