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Finding the Fourth Proportional to 93,394.26, 128,878.82 and 53,117.82

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Solution

The fourth proportional to 93,394.26, 128,878.82 and 53,117.82 is: 73,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,394.26 : 128,878.82 = 53,117.82 : x
  2. Step 2: Convert to fraction form
    93,394.26/128,878.82 = 53,117.82/x
  3. Step 3: Cross multiply
    93,394.26x = 128,878.82 × 53,117.82
  4. Step 4: Simplify right side
    93,394.26x = 6,845,761,962.57
  5. Step 5: Solve for x
    x = 6,845,761,962.57/93,394.26
  6. Step 6: Final answer
    x = 73,299.60

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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.