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Finding the Fourth Proportional to 695,648.50, 959,777.02 and 389,683.56

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Solution

The fourth proportional to 695,648.50, 959,777.02 and 389,683.56 is: 537,641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,648.50 : 959,777.02 = 389,683.56 : x
  2. Step 2: Convert to fraction form
    695,648.50/959,777.02 = 389,683.56/x
  3. Step 3: Cross multiply
    695,648.50x = 959,777.02 × 389,683.56
  4. Step 4: Simplify right side
    695,648.50x = 374,009,325,959.79
  5. Step 5: Solve for x
    x = 374,009,325,959.79/695,648.50
  6. Step 6: Final answer
    x = 537,641.25

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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.