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Finding the Fourth Proportional to 333,798.69, 500,690.95 and 81,080.35

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Solution

The fourth proportional to 333,798.69, 500,690.95 and 81,080.35 is: 121,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,798.69 : 500,690.95 = 81,080.35 : x
  2. Step 2: Convert to fraction form
    333,798.69/500,690.95 = 81,080.35/x
  3. Step 3: Cross multiply
    333,798.69x = 500,690.95 × 81,080.35
  4. Step 4: Simplify right side
    333,798.69x = 40,596,197,467.83
  5. Step 5: Solve for x
    x = 40,596,197,467.83/333,798.69
  6. Step 6: Final answer
    x = 121,618.80

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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.