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Finding the Fourth Proportional to 116,005.80, 174,008.70 and 102,786.60

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Solution

The fourth proportional to 116,005.80, 174,008.70 and 102,786.60 is: 154,179.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,005.80 : 174,008.70 = 102,786.60 : x
  2. Step 2: Convert to fraction form
    116,005.80/174,008.70 = 102,786.60/x
  3. Step 3: Cross multiply
    116,005.80x = 174,008.70 × 102,786.60
  4. Step 4: Simplify right side
    116,005.80x = 17,885,762,643.42
  5. Step 5: Solve for x
    x = 17,885,762,643.42/116,005.80
  6. Step 6: Final answer
    x = 154,179.90

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1.5x scale

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.