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Finding the Fourth Proportional to 639,146.76, 881,992.98 and 367,023.21

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Solution

The fourth proportional to 639,146.76, 881,992.98 and 367,023.21 is: 506,475.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,146.76 : 881,992.98 = 367,023.21 : x
  2. Step 2: Convert to fraction form
    639,146.76/881,992.98 = 367,023.21/x
  3. Step 3: Cross multiply
    639,146.76x = 881,992.98 × 367,023.21
  4. Step 4: Simplify right side
    639,146.76x = 323,711,894,717.07
  5. Step 5: Solve for x
    x = 323,711,894,717.07/639,146.76
  6. Step 6: Final answer
    x = 506,475.06

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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.