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Finding the Fourth Proportional to 576,807.40, 865,211.10 and 340,611.40

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Solution

The fourth proportional to 576,807.40, 865,211.10 and 340,611.40 is: 510,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,807.40 : 865,211.10 = 340,611.40 : x
  2. Step 2: Convert to fraction form
    576,807.40/865,211.10 = 340,611.40/x
  3. Step 3: Cross multiply
    576,807.40x = 865,211.10 × 340,611.40
  4. Step 4: Simplify right side
    576,807.40x = 294,700,764,066.54
  5. Step 5: Solve for x
    x = 294,700,764,066.54/576,807.40
  6. Step 6: Final answer
    x = 510,917.10

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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.