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Finding the Fourth Proportional to 695,928,649.48, 959,490,015.30 and 570,016,994.20

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Solution

The fourth proportional to 695,928,649.48, 959,490,015.30 and 570,016,994.20 is: 785,893,230.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,928,649.48 : 959,490,015.30 = 570,016,994.20 : x
  2. Step 2: Convert to fraction form
    695,928,649.48/959,490,015.30 = 570,016,994.20/x
  3. Step 3: Cross multiply
    695,928,649.48x = 959,490,015.30 × 570,016,994.20
  4. Step 4: Simplify right side
    695,928,649.48x = 546,925,614,486,218,048
  5. Step 5: Solve for x
    x = 546,925,614,486,218,048/695,928,649.48
  6. Step 6: Final answer
    x = 785,893,230.43

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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.