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Finding the Fourth Proportional to 695,369,026.64, 959,662,630.32 and 398,104,505.48

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Solution

The fourth proportional to 695,369,026.64, 959,662,630.32 and 398,104,505.48 is: 549,414,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,369,026.64 : 959,662,630.32 = 398,104,505.48 : x
  2. Step 2: Convert to fraction form
    695,369,026.64/959,662,630.32 = 398,104,505.48/x
  3. Step 3: Cross multiply
    695,369,026.64x = 959,662,630.32 × 398,104,505.48
  4. Step 4: Simplify right side
    695,369,026.64x = 382,046,016,871,179,712
  5. Step 5: Solve for x
    x = 382,046,016,871,179,712/695,369,026.64
  6. Step 6: Final answer
    x = 549,414,774.36

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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.