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Finding the Fourth Proportional to 121,808.97, 182,715.48 and 42,924.15

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Solution

The fourth proportional to 121,808.97, 182,715.48 and 42,924.15 is: 64,386.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,808.97 : 182,715.48 = 42,924.15 : x
  2. Step 2: Convert to fraction form
    121,808.97/182,715.48 = 42,924.15/x
  3. Step 3: Cross multiply
    121,808.97x = 182,715.48 × 42,924.15
  4. Step 4: Simplify right side
    121,808.97x = 7,842,906,670.84
  5. Step 5: Solve for x
    x = 7,842,906,670.84/121,808.97
  6. Step 6: Final answer
    x = 64,386.94

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1.5x scale

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.