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Finding the Fourth Proportional to 93,312.60, 128,772.70 and 50,871.12

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Solution

The fourth proportional to 93,312.60, 128,772.70 and 50,871.12 is: 70,202.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.60 : 128,772.70 = 50,871.12 : x
  2. Step 2: Convert to fraction form
    93,312.60/128,772.70 = 50,871.12/x
  3. Step 3: Cross multiply
    93,312.60x = 128,772.70 × 50,871.12
  4. Step 4: Simplify right side
    93,312.60x = 6,550,811,474.42
  5. Step 5: Solve for x
    x = 6,550,811,474.42/93,312.60
  6. Step 6: Final answer
    x = 70,202.86

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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.