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Finding the Fourth Proportional to 772,761.80, 1,156,809.90 and 772,761.80

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Solution

The fourth proportional to 772,761.80, 1,156,809.90 and 772,761.80 is: 1,156,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,761.80 : 1,156,809.90 = 772,761.80 : x
  2. Step 2: Convert to fraction form
    772,761.80/1,156,809.90 = 772,761.80/x
  3. Step 3: Cross multiply
    772,761.80x = 1,156,809.90 × 772,761.80
  4. Step 4: Simplify right side
    772,761.80x = 893,938,500,581.82
  5. Step 5: Solve for x
    x = 893,938,500,581.82/772,761.80
  6. Step 6: Final answer
    x = 1,156,809.90

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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.