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Finding the Fourth Proportional to 287,019.92, 395,863.08 and 186,450.32

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Solution

The fourth proportional to 287,019.92, 395,863.08 and 186,450.32 is: 257,155.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,019.92 : 395,863.08 = 186,450.32 : x
  2. Step 2: Convert to fraction form
    287,019.92/395,863.08 = 186,450.32/x
  3. Step 3: Cross multiply
    287,019.92x = 395,863.08 × 186,450.32
  4. Step 4: Simplify right side
    287,019.92x = 73,808,797,942.19
  5. Step 5: Solve for x
    x = 73,808,797,942.19/287,019.92
  6. Step 6: Final answer
    x = 257,155.66

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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.