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Finding the Fourth Proportional to 316,285.83, 436,461.62 and 189,031.59

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Solution

The fourth proportional to 316,285.83, 436,461.62 and 189,031.59 is: 260,855.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,285.83 : 436,461.62 = 189,031.59 : x
  2. Step 2: Convert to fraction form
    316,285.83/436,461.62 = 189,031.59/x
  3. Step 3: Cross multiply
    316,285.83x = 436,461.62 × 189,031.59
  4. Step 4: Simplify right side
    316,285.83x = 82,505,033,057.42
  5. Step 5: Solve for x
    x = 82,505,033,057.42/316,285.83
  6. Step 6: Final answer
    x = 260,855.93

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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.