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Finding the Fourth Proportional to 639,044.76, 957,581.76 and 314,460.24

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Solution

The fourth proportional to 639,044.76, 957,581.76 and 314,460.24 is: 471,205.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,044.76 : 957,581.76 = 314,460.24 : x
  2. Step 2: Convert to fraction form
    639,044.76/957,581.76 = 314,460.24/x
  3. Step 3: Cross multiply
    639,044.76x = 957,581.76 × 314,460.24
  4. Step 4: Simplify right side
    639,044.76x = 301,121,390,069.22
  5. Step 5: Solve for x
    x = 301,121,390,069.22/639,044.76
  6. Step 6: Final answer
    x = 471,205.48

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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.