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Finding the Fourth Proportional to 141,641.90, 212,441.84 and 51,663.51

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Solution

The fourth proportional to 141,641.90, 212,441.84 and 51,663.51 is: 77,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,641.90 : 212,441.84 = 51,663.51 : x
  2. Step 2: Convert to fraction form
    141,641.90/212,441.84 = 51,663.51/x
  3. Step 3: Cross multiply
    141,641.90x = 212,441.84 × 51,663.51
  4. Step 4: Simplify right side
    141,641.90x = 10,975,490,866.94
  5. Step 5: Solve for x
    x = 10,975,490,866.94/141,641.90
  6. Step 6: Final answer
    x = 77,487.60

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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.