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Finding the Fourth Proportional to 93,293.76, 128,748.43 and 53,005.13

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Solution

The fourth proportional to 93,293.76, 128,748.43 and 53,005.13 is: 73,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,293.76 : 128,748.43 = 53,005.13 : x
  2. Step 2: Convert to fraction form
    93,293.76/128,748.43 = 53,005.13/x
  3. Step 3: Cross multiply
    93,293.76x = 128,748.43 × 53,005.13
  4. Step 4: Simplify right side
    93,293.76x = 6,824,327,269.45
  5. Step 5: Solve for x
    x = 6,824,327,269.45/93,293.76
  6. Step 6: Final answer
    x = 73,148.81

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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.