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Finding the Fourth Proportional to 262,886.20, 394,329.30 and 178,905.40

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Solution

The fourth proportional to 262,886.20, 394,329.30 and 178,905.40 is: 268,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,886.20 : 394,329.30 = 178,905.40 : x
  2. Step 2: Convert to fraction form
    262,886.20/394,329.30 = 178,905.40/x
  3. Step 3: Cross multiply
    262,886.20x = 394,329.30 × 178,905.40
  4. Step 4: Simplify right side
    262,886.20x = 70,547,641,148.22
  5. Step 5: Solve for x
    x = 70,547,641,148.22/262,886.20
  6. Step 6: Final answer
    x = 268,358.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.