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Finding the Fourth Proportional to 651,577.77, 899,030.70 and 393,496.74

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Solution

The fourth proportional to 651,577.77, 899,030.70 and 393,496.74 is: 542,936.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,577.77 : 899,030.70 = 393,496.74 : x
  2. Step 2: Convert to fraction form
    651,577.77/899,030.70 = 393,496.74/x
  3. Step 3: Cross multiply
    651,577.77x = 899,030.70 × 393,496.74
  4. Step 4: Simplify right side
    651,577.77x = 353,765,649,609.92
  5. Step 5: Solve for x
    x = 353,765,649,609.92/651,577.77
  6. Step 6: Final answer
    x = 542,936.95

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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.