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Finding the Fourth Proportional to 93,410.48, 128,909.31 and 53,130.04

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Solution

The fourth proportional to 93,410.48, 128,909.31 and 53,130.04 is: 73,321.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,410.48 : 128,909.31 = 53,130.04 : x
  2. Step 2: Convert to fraction form
    93,410.48/128,909.31 = 53,130.04/x
  3. Step 3: Cross multiply
    93,410.48x = 128,909.31 × 53,130.04
  4. Step 4: Simplify right side
    93,410.48x = 6,848,956,531.02
  5. Step 5: Solve for x
    x = 6,848,956,531.02/93,410.48
  6. Step 6: Final answer
    x = 73,321.07

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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.