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Finding the Fourth Proportional to 333,815.76, 500,718.51 and 81,098.19

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Solution

The fourth proportional to 333,815.76, 500,718.51 and 81,098.19 is: 121,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,815.76 : 500,718.51 = 81,098.19 : x
  2. Step 2: Convert to fraction form
    333,815.76/500,718.51 = 81,098.19/x
  3. Step 3: Cross multiply
    333,815.76x = 500,718.51 × 81,098.19
  4. Step 4: Simplify right side
    333,815.76x = 40,607,364,860.50
  5. Step 5: Solve for x
    x = 40,607,364,860.50/333,815.76
  6. Step 6: Final answer
    x = 121,646.04

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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.