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Finding the Fourth Proportional to 286,658.85, 395,593.95 and 157,602.78

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Solution

The fourth proportional to 286,658.85, 395,593.95 and 157,602.78 is: 217,494.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,658.85 : 395,593.95 = 157,602.78 : x
  2. Step 2: Convert to fraction form
    286,658.85/395,593.95 = 157,602.78/x
  3. Step 3: Cross multiply
    286,658.85x = 395,593.95 × 157,602.78
  4. Step 4: Simplify right side
    286,658.85x = 62,346,706,271.18
  5. Step 5: Solve for x
    x = 62,346,706,271.18/286,658.85
  6. Step 6: Final answer
    x = 217,494.44

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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.