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Finding the Fourth Proportional to 612,116.76, 844,709.58 and 340,181.40

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Solution

The fourth proportional to 612,116.76, 844,709.58 and 340,181.40 is: 469,443.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,116.76 : 844,709.58 = 340,181.40 : x
  2. Step 2: Convert to fraction form
    612,116.76/844,709.58 = 340,181.40/x
  3. Step 3: Cross multiply
    612,116.76x = 844,709.58 × 340,181.40
  4. Step 4: Simplify right side
    612,116.76x = 287,354,487,517.81
  5. Step 5: Solve for x
    x = 287,354,487,517.81/612,116.76
  6. Step 6: Final answer
    x = 469,443.91

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Double scale
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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.