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Finding the Fourth Proportional to 316,174.36, 436,336.59 and 187,186.90

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Solution

The fourth proportional to 316,174.36, 436,336.59 and 187,186.90 is: 258,327.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,174.36 : 436,336.59 = 187,186.90 : x
  2. Step 2: Convert to fraction form
    316,174.36/436,336.59 = 187,186.90/x
  3. Step 3: Cross multiply
    316,174.36x = 436,336.59 × 187,186.90
  4. Step 4: Simplify right side
    316,174.36x = 81,676,493,638.67
  5. Step 5: Solve for x
    x = 81,676,493,638.67/316,174.36
  6. Step 6: Final answer
    x = 258,327.38

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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.