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Finding the Fourth Proportional to 286,514.70, 429,858.45 and 153,458.70

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Solution

The fourth proportional to 286,514.70, 429,858.45 and 153,458.70 is: 230,234.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,514.70 : 429,858.45 = 153,458.70 : x
  2. Step 2: Convert to fraction form
    286,514.70/429,858.45 = 153,458.70/x
  3. Step 3: Cross multiply
    286,514.70x = 429,858.45 × 153,458.70
  4. Step 4: Simplify right side
    286,514.70x = 65,965,518,921.02
  5. Step 5: Solve for x
    x = 65,965,518,921.02/286,514.70
  6. Step 6: Final answer
    x = 230,234.33

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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.