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Finding the Fourth Proportional to 121,405, 182,109.16 and 46,528.96

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Solution

The fourth proportional to 121,405, 182,109.16 and 46,528.96 is: 69,794.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,405 : 182,109.16 = 46,528.96 : x
  2. Step 2: Convert to fraction form
    121,405/182,109.16 = 46,528.96/x
  3. Step 3: Cross multiply
    121,405x = 182,109.16 × 46,528.96
  4. Step 4: Simplify right side
    121,405x = 8,473,349,821.27
  5. Step 5: Solve for x
    x = 8,473,349,821.27/121,405
  6. Step 6: Final answer
    x = 69,794.08

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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.