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Finding the Fourth Proportional to 402,562.86, 555,561.63 and 335,378.22

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Solution

The fourth proportional to 402,562.86, 555,561.63 and 335,378.22 is: 462,842.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,562.86 : 555,561.63 = 335,378.22 : x
  2. Step 2: Convert to fraction form
    402,562.86/555,561.63 = 335,378.22/x
  3. Step 3: Cross multiply
    402,562.86x = 555,561.63 × 335,378.22
  4. Step 4: Simplify right side
    402,562.86x = 186,323,270,569.70
  5. Step 5: Solve for x
    x = 186,323,270,569.70/402,562.86
  6. Step 6: Final answer
    x = 462,842.67

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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.