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Finding the Fourth Proportional to 92,883.60, 128,173.32 and 59,346

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Solution

The fourth proportional to 92,883.60, 128,173.32 and 59,346 is: 81,893.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,883.60 : 128,173.32 = 59,346 : x
  2. Step 2: Convert to fraction form
    92,883.60/128,173.32 = 59,346/x
  3. Step 3: Cross multiply
    92,883.60x = 128,173.32 × 59,346
  4. Step 4: Simplify right side
    92,883.60x = 7,606,573,848.72
  5. Step 5: Solve for x
    x = 7,606,573,848.72/92,883.60
  6. Step 6: Final answer
    x = 81,893.62

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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.