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Finding the Fourth Proportional to 93,368.80, 128,848.34 and 53,082.58

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Solution

The fourth proportional to 93,368.80, 128,848.34 and 53,082.58 is: 73,253.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,368.80 : 128,848.34 = 53,082.58 : x
  2. Step 2: Convert to fraction form
    93,368.80/128,848.34 = 53,082.58/x
  3. Step 3: Cross multiply
    93,368.80x = 128,848.34 × 53,082.58
  4. Step 4: Simplify right side
    93,368.80x = 6,839,601,406.26
  5. Step 5: Solve for x
    x = 6,839,601,406.26/93,368.80
  6. Step 6: Final answer
    x = 73,253.61

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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.