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Finding the Fourth Proportional to 639,466.76, 882,726.90 and 436,188.68

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Solution

The fourth proportional to 639,466.76, 882,726.90 and 436,188.68 is: 602,119.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,466.76 : 882,726.90 = 436,188.68 : x
  2. Step 2: Convert to fraction form
    639,466.76/882,726.90 = 436,188.68/x
  3. Step 3: Cross multiply
    639,466.76x = 882,726.90 × 436,188.68
  4. Step 4: Simplify right side
    639,466.76x = 385,035,481,311.49
  5. Step 5: Solve for x
    x = 385,035,481,311.49/639,466.76
  6. Step 6: Final answer
    x = 602,119.62

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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.