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Finding the Fourth Proportional to 405,841.92, 560,168.16 and 233,779.68

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Solution

The fourth proportional to 405,841.92, 560,168.16 and 233,779.68 is: 322,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,841.92 : 560,168.16 = 233,779.68 : x
  2. Step 2: Convert to fraction form
    405,841.92/560,168.16 = 233,779.68/x
  3. Step 3: Cross multiply
    405,841.92x = 560,168.16 × 233,779.68
  4. Step 4: Simplify right side
    405,841.92x = 130,955,933,190.99
  5. Step 5: Solve for x
    x = 130,955,933,190.99/405,841.92
  6. Step 6: Final answer
    x = 322,677.20

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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.