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Finding the Fourth Proportional to 778,885.90, 1,092,014.90 and 778,885.90

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Solution

The fourth proportional to 778,885.90, 1,092,014.90 and 778,885.90 is: 1,092,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,885.90 : 1,092,014.90 = 778,885.90 : x
  2. Step 2: Convert to fraction form
    778,885.90/1,092,014.90 = 778,885.90/x
  3. Step 3: Cross multiply
    778,885.90x = 1,092,014.90 × 778,885.90
  4. Step 4: Simplify right side
    778,885.90x = 850,555,008,199.91
  5. Step 5: Solve for x
    x = 850,555,008,199.91/778,885.90
  6. Step 6: Final answer
    x = 1,092,014.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.