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Finding the Fourth Proportional to 714,173.36, 985,525.38 and 391,876.38

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Solution

The fourth proportional to 714,173.36, 985,525.38 and 391,876.38 is: 540,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,173.36 : 985,525.38 = 391,876.38 : x
  2. Step 2: Convert to fraction form
    714,173.36/985,525.38 = 391,876.38/x
  3. Step 3: Cross multiply
    714,173.36x = 985,525.38 × 391,876.38
  4. Step 4: Simplify right side
    714,173.36x = 386,204,118,312.52
  5. Step 5: Solve for x
    x = 386,204,118,312.52/714,173.36
  6. Step 6: Final answer
    x = 540,770.83

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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.