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Finding the Fourth Proportional to 121,365.89, 181,931.27 and 46,428.33

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Solution

The fourth proportional to 121,365.89, 181,931.27 and 46,428.33 is: 69,597.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,365.89 : 181,931.27 = 46,428.33 : x
  2. Step 2: Convert to fraction form
    121,365.89/181,931.27 = 46,428.33/x
  3. Step 3: Cross multiply
    121,365.89x = 181,931.27 × 46,428.33
  4. Step 4: Simplify right side
    121,365.89x = 8,446,765,156.95
  5. Step 5: Solve for x
    x = 8,446,765,156.95/121,365.89
  6. Step 6: Final answer
    x = 69,597.52

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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.