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Finding the Fourth Proportional to 93,355.25, 128,808.09 and 53,065.85

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Solution

The fourth proportional to 93,355.25, 128,808.09 and 53,065.85 is: 73,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,355.25 : 128,808.09 = 53,065.85 : x
  2. Step 2: Convert to fraction form
    93,355.25/128,808.09 = 53,065.85/x
  3. Step 3: Cross multiply
    93,355.25x = 128,808.09 × 53,065.85
  4. Step 4: Simplify right side
    93,355.25x = 6,835,310,138.69
  5. Step 5: Solve for x
    x = 6,835,310,138.69/93,355.25
  6. Step 6: Final answer
    x = 73,218.28

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1.5x scale

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.