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Finding the Fourth Proportional to 778,876.45, 1,093,376.15 and 778,876.45

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Solution

The fourth proportional to 778,876.45, 1,093,376.15 and 778,876.45 is: 1,093,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,876.45 : 1,093,376.15 = 778,876.45 : x
  2. Step 2: Convert to fraction form
    778,876.45/1,093,376.15 = 778,876.45/x
  3. Step 3: Cross multiply
    778,876.45x = 1,093,376.15 × 778,876.45
  4. Step 4: Simplify right side
    778,876.45x = 851,604,934,226.67
  5. Step 5: Solve for x
    x = 851,604,934,226.67/778,876.45
  6. Step 6: Final answer
    x = 1,093,376.15

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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.