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Finding the Fourth Proportional to 522,071.20, 783,106.80 and 515,072.80

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Solution

The fourth proportional to 522,071.20, 783,106.80 and 515,072.80 is: 772,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,071.20 : 783,106.80 = 515,072.80 : x
  2. Step 2: Convert to fraction form
    522,071.20/783,106.80 = 515,072.80/x
  3. Step 3: Cross multiply
    522,071.20x = 783,106.80 × 515,072.80
  4. Step 4: Simplify right side
    522,071.20x = 403,357,012,175.04
  5. Step 5: Solve for x
    x = 403,357,012,175.04/522,071.20
  6. Step 6: Final answer
    x = 772,609.20

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Double scale
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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.