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Finding the Fourth Proportional to 161,903.93, 242,909.66 and 71,934.12

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Solution

The fourth proportional to 161,903.93, 242,909.66 and 71,934.12 is: 107,925.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,903.93 : 242,909.66 = 71,934.12 : x
  2. Step 2: Convert to fraction form
    161,903.93/242,909.66 = 71,934.12/x
  3. Step 3: Cross multiply
    161,903.93x = 242,909.66 × 71,934.12
  4. Step 4: Simplify right side
    161,903.93x = 17,473,492,811.43
  5. Step 5: Solve for x
    x = 17,473,492,811.43/161,903.93
  6. Step 6: Final answer
    x = 107,925.07

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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.