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Finding the Fourth Proportional to 334,428.71, 501,641.70 and 121,146.68

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Solution

The fourth proportional to 334,428.71, 501,641.70 and 121,146.68 is: 181,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,428.71 : 501,641.70 = 121,146.68 : x
  2. Step 2: Convert to fraction form
    334,428.71/501,641.70 = 121,146.68/x
  3. Step 3: Cross multiply
    334,428.71x = 501,641.70 × 121,146.68
  4. Step 4: Simplify right side
    334,428.71x = 60,772,227,758.66
  5. Step 5: Solve for x
    x = 60,772,227,758.66/334,428.71
  6. Step 6: Final answer
    x = 181,719.53

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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.