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Finding the Fourth Proportional to 93,693.60, 140,248.80 and 54,133.20

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Solution

The fourth proportional to 93,693.60, 140,248.80 and 54,133.20 is: 81,031.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,693.60 : 140,248.80 = 54,133.20 : x
  2. Step 2: Convert to fraction form
    93,693.60/140,248.80 = 54,133.20/x
  3. Step 3: Cross multiply
    93,693.60x = 140,248.80 × 54,133.20
  4. Step 4: Simplify right side
    93,693.60x = 7,592,116,340.16
  5. Step 5: Solve for x
    x = 7,592,116,340.16/93,693.60
  6. Step 6: Final answer
    x = 81,031.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.