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Finding the Fourth Proportional to 639,686.06, 882,818.70 and 367,842.32

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Solution

The fourth proportional to 639,686.06, 882,818.70 and 367,842.32 is: 507,652.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,686.06 : 882,818.70 = 367,842.32 : x
  2. Step 2: Convert to fraction form
    639,686.06/882,818.70 = 367,842.32/x
  3. Step 3: Cross multiply
    639,686.06x = 882,818.70 × 367,842.32
  4. Step 4: Simplify right side
    639,686.06x = 324,738,078,747.38
  5. Step 5: Solve for x
    x = 324,738,078,747.38/639,686.06
  6. Step 6: Final answer
    x = 507,652.27

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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.