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Finding the Fourth Proportional to 639,148.76, 881,995.74 and 367,025.22

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Solution

The fourth proportional to 639,148.76, 881,995.74 and 367,025.22 is: 506,477.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,148.76 : 881,995.74 = 367,025.22 : x
  2. Step 2: Convert to fraction form
    639,148.76/881,995.74 = 367,025.22/x
  3. Step 3: Cross multiply
    639,148.76x = 881,995.74 × 367,025.22
  4. Step 4: Simplify right side
    639,148.76x = 323,714,680,512.56
  5. Step 5: Solve for x
    x = 323,714,680,512.56/639,148.76
  6. Step 6: Final answer
    x = 506,477.84

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.