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Finding the Fourth Proportional to 104,627.78, 144,387.90 and 56,881.02

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Solution

The fourth proportional to 104,627.78, 144,387.90 and 56,881.02 is: 78,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,627.78 : 144,387.90 = 56,881.02 : x
  2. Step 2: Convert to fraction form
    104,627.78/144,387.90 = 56,881.02/x
  3. Step 3: Cross multiply
    104,627.78x = 144,387.90 × 56,881.02
  4. Step 4: Simplify right side
    104,627.78x = 8,212,931,027.66
  5. Step 5: Solve for x
    x = 8,212,931,027.66/104,627.78
  6. Step 6: Final answer
    x = 78,496.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.