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Finding the Fourth Proportional to 283,897.04, 391,678.99 and 181,978.70

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Solution

The fourth proportional to 283,897.04, 391,678.99 and 181,978.70 is: 251,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,897.04 : 391,678.99 = 181,978.70 : x
  2. Step 2: Convert to fraction form
    283,897.04/391,678.99 = 181,978.70/x
  3. Step 3: Cross multiply
    283,897.04x = 391,678.99 × 181,978.70
  4. Step 4: Simplify right side
    283,897.04x = 71,277,233,941.76
  5. Step 5: Solve for x
    x = 71,277,233,941.76/283,897.04
  6. Step 6: Final answer
    x = 251,067.19

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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.