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Finding the Fourth Proportional to 665,457.12, 918,759.92 and 593,712.59

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Solution

The fourth proportional to 665,457.12, 918,759.92 and 593,712.59 is: 819,706.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,457.12 : 918,759.92 = 593,712.59 : x
  2. Step 2: Convert to fraction form
    665,457.12/918,759.92 = 593,712.59/x
  3. Step 3: Cross multiply
    665,457.12x = 918,759.92 × 593,712.59
  4. Step 4: Simplify right side
    665,457.12x = 545,479,324,129.03
  5. Step 5: Solve for x
    x = 545,479,324,129.03/665,457.12
  6. Step 6: Final answer
    x = 819,706.20

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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.