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Finding the Fourth Proportional to 662,965.80, 995,315.94 and 393,585.72

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Solution

The fourth proportional to 662,965.80, 995,315.94 and 393,585.72 is: 590,893.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,965.80 : 995,315.94 = 393,585.72 : x
  2. Step 2: Convert to fraction form
    662,965.80/995,315.94 = 393,585.72/x
  3. Step 3: Cross multiply
    662,965.80x = 995,315.94 × 393,585.72
  4. Step 4: Simplify right side
    662,965.80x = 391,742,140,872.38
  5. Step 5: Solve for x
    x = 391,742,140,872.38/662,965.80
  6. Step 6: Final answer
    x = 590,893.44

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Double scale
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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.