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Finding the Fourth Proportional to 330,212.58, 455,684.58 and 186,986.22

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Solution

The fourth proportional to 330,212.58, 455,684.58 and 186,986.22 is: 258,036.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,212.58 : 455,684.58 = 186,986.22 : x
  2. Step 2: Convert to fraction form
    330,212.58/455,684.58 = 186,986.22/x
  3. Step 3: Cross multiply
    330,212.58x = 455,684.58 × 186,986.22
  4. Step 4: Simplify right side
    330,212.58x = 85,206,737,126.49
  5. Step 5: Solve for x
    x = 85,206,737,126.49/330,212.58
  6. Step 6: Final answer
    x = 258,036.01

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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.