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Finding the Fourth Proportional to 235,417.31, 353,072.76 and 66,933.93

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Solution

The fourth proportional to 235,417.31, 353,072.76 and 66,933.93 is: 100,385.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,417.31 : 353,072.76 = 66,933.93 : x
  2. Step 2: Convert to fraction form
    235,417.31/353,072.76 = 66,933.93/x
  3. Step 3: Cross multiply
    235,417.31x = 353,072.76 × 66,933.93
  4. Step 4: Simplify right side
    235,417.31x = 23,632,547,402.75
  5. Step 5: Solve for x
    x = 23,632,547,402.75/235,417.31
  6. Step 6: Final answer
    x = 100,385.77

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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.