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Finding the Fourth Proportional to 695,773.68, 960,155.16 and 389,848.80

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Solution

The fourth proportional to 695,773.68, 960,155.16 and 389,848.80 is: 537,984.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,773.68 : 960,155.16 = 389,848.80 : x
  2. Step 2: Convert to fraction form
    695,773.68/960,155.16 = 389,848.80/x
  3. Step 3: Cross multiply
    695,773.68x = 960,155.16 × 389,848.80
  4. Step 4: Simplify right side
    695,773.68x = 374,315,336,939.81
  5. Step 5: Solve for x
    x = 374,315,336,939.81/695,773.68
  6. Step 6: Final answer
    x = 537,984.33

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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.