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Finding the Fourth Proportional to 344,581.16, 516,830.70 and 91,880.60

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Solution

The fourth proportional to 344,581.16, 516,830.70 and 91,880.60 is: 137,809.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,581.16 : 516,830.70 = 91,880.60 : x
  2. Step 2: Convert to fraction form
    344,581.16/516,830.70 = 91,880.60/x
  3. Step 3: Cross multiply
    344,581.16x = 516,830.70 × 91,880.60
  4. Step 4: Simplify right side
    344,581.16x = 47,486,714,814.42
  5. Step 5: Solve for x
    x = 47,486,714,814.42/344,581.16
  6. Step 6: Final answer
    x = 137,809.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.