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Finding the Fourth Proportional to 287,017.92, 395,860.32 and 186,448.32

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Solution

The fourth proportional to 287,017.92, 395,860.32 and 186,448.32 is: 257,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,017.92 : 395,860.32 = 186,448.32 : x
  2. Step 2: Convert to fraction form
    287,017.92/395,860.32 = 186,448.32/x
  3. Step 3: Cross multiply
    287,017.92x = 395,860.32 × 186,448.32
  4. Step 4: Simplify right side
    287,017.92x = 73,807,491,618.66
  5. Step 5: Solve for x
    x = 73,807,491,618.66/287,017.92
  6. Step 6: Final answer
    x = 257,152.90

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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.