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Finding the Fourth Proportional to 699,851.01, 965,825.03 and 393,947.13

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Solution

The fourth proportional to 699,851.01, 965,825.03 and 393,947.13 is: 543,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,851.01 : 965,825.03 = 393,947.13 : x
  2. Step 2: Convert to fraction form
    699,851.01/965,825.03 = 393,947.13/x
  3. Step 3: Cross multiply
    699,851.01x = 965,825.03 × 393,947.13
  4. Step 4: Simplify right side
    699,851.01x = 380,483,996,680.93
  5. Step 5: Solve for x
    x = 380,483,996,680.93/699,851.01
  6. Step 6: Final answer
    x = 543,664.28

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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.