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Finding the Fourth Proportional to 585,639.25, 878,458.88 and 186,280.09

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Solution

The fourth proportional to 585,639.25, 878,458.88 and 186,280.09 is: 279,420.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,639.25 : 878,458.88 = 186,280.09 : x
  2. Step 2: Convert to fraction form
    585,639.25/878,458.88 = 186,280.09/x
  3. Step 3: Cross multiply
    585,639.25x = 878,458.88 × 186,280.09
  4. Step 4: Simplify right side
    585,639.25x = 163,639,401,423.85
  5. Step 5: Solve for x
    x = 163,639,401,423.85/585,639.25
  6. Step 6: Final answer
    x = 279,420.14

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Similar ratio
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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.