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Finding the Fourth Proportional to 1,260,129,227.95, 1,738,978,649.73 and 695,614,437.55

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Solution

The fourth proportional to 1,260,129,227.95, 1,738,978,649.73 and 695,614,437.55 is: 959,948,097.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,129,227.95 : 1,738,978,649.73 = 695,614,437.55 : x
  2. Step 2: Convert to fraction form
    1,260,129,227.95/1,738,978,649.73 = 695,614,437.55/x
  3. Step 3: Cross multiply
    1,260,129,227.95x = 1,738,978,649.73 × 695,614,437.55
  4. Step 4: Simplify right side
    1,260,129,227.95x = 1,209,658,655,343,392,256
  5. Step 5: Solve for x
    x = 1,209,658,655,343,392,256/1,260,129,227.95
  6. Step 6: Final answer
    x = 959,948,097.79

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Double scale
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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.