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Finding the Fourth Proportional to 330,132.96, 455,611.68 and 186,918.24

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Solution

The fourth proportional to 330,132.96, 455,611.68 and 186,918.24 is: 257,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,132.96 : 455,611.68 = 186,918.24 : x
  2. Step 2: Convert to fraction form
    330,132.96/455,611.68 = 186,918.24/x
  3. Step 3: Cross multiply
    330,132.96x = 455,611.68 × 186,918.24
  4. Step 4: Simplify right side
    330,132.96x = 85,162,133,349.04
  5. Step 5: Solve for x
    x = 85,162,133,349.04/330,132.96
  6. Step 6: Final answer
    x = 257,963.14

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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.