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Finding the Fourth Proportional to 714,234.84, 985,658.94 and 391,926.12

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Solution

The fourth proportional to 714,234.84, 985,658.94 and 391,926.12 is: 540,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,234.84 : 985,658.94 = 391,926.12 : x
  2. Step 2: Convert to fraction form
    714,234.84/985,658.94 = 391,926.12/x
  3. Step 3: Cross multiply
    714,234.84x = 985,658.94 × 391,926.12
  4. Step 4: Simplify right side
    714,234.84x = 386,305,483,997.51
  5. Step 5: Solve for x
    x = 386,305,483,997.51/714,234.84
  6. Step 6: Final answer
    x = 540,866.20

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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.