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Finding the Fourth Proportional to 681,295,868.66, 940,363,229.97 and 443,733,038.25

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Solution

The fourth proportional to 681,295,868.66, 940,363,229.97 and 443,733,038.25 is: 612,465,526.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,295,868.66 : 940,363,229.97 = 443,733,038.25 : x
  2. Step 2: Convert to fraction form
    681,295,868.66/940,363,229.97 = 443,733,038.25/x
  3. Step 3: Cross multiply
    681,295,868.66x = 940,363,229.97 × 443,733,038.25
  4. Step 4: Simplify right side
    681,295,868.66x = 417,270,233,093,171,584
  5. Step 5: Solve for x
    x = 417,270,233,093,171,584/681,295,868.66
  6. Step 6: Final answer
    x = 612,465,526.79

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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.