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Finding the Fourth Proportional to 695,777.40, 960,158.88 and 389,850.12

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Solution

The fourth proportional to 695,777.40, 960,158.88 and 389,850.12 is: 537,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,777.40 : 960,158.88 = 389,850.12 : x
  2. Step 2: Convert to fraction form
    695,777.40/960,158.88 = 389,850.12/x
  3. Step 3: Cross multiply
    695,777.40x = 960,158.88 × 389,850.12
  4. Step 4: Simplify right side
    695,777.40x = 374,318,054,587.07
  5. Step 5: Solve for x
    x = 374,318,054,587.07/695,777.40
  6. Step 6: Final answer
    x = 537,985.36

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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.