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Finding the Fourth Proportional to 333,772.60, 500,654.58 and 81,055.16

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Solution

The fourth proportional to 333,772.60, 500,654.58 and 81,055.16 is: 121,581.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,772.60 : 500,654.58 = 81,055.16 : x
  2. Step 2: Convert to fraction form
    333,772.60/500,654.58 = 81,055.16/x
  3. Step 3: Cross multiply
    333,772.60x = 500,654.58 × 81,055.16
  4. Step 4: Simplify right side
    333,772.60x = 40,580,637,086.63
  5. Step 5: Solve for x
    x = 40,580,637,086.63/333,772.60
  6. Step 6: Final answer
    x = 121,581.69

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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.