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Finding the Fourth Proportional to 286,553.60, 429,830.40 and 185,514.20

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Solution

The fourth proportional to 286,553.60, 429,830.40 and 185,514.20 is: 278,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,553.60 : 429,830.40 = 185,514.20 : x
  2. Step 2: Convert to fraction form
    286,553.60/429,830.40 = 185,514.20/x
  3. Step 3: Cross multiply
    286,553.60x = 429,830.40 × 185,514.20
  4. Step 4: Simplify right side
    286,553.60x = 79,739,642,791.68
  5. Step 5: Solve for x
    x = 79,739,642,791.68/286,553.60
  6. Step 6: Final answer
    x = 278,271.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.