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Finding the Fourth Proportional to 104,809.80, 144,631.68 and 57,060.30

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Solution

The fourth proportional to 104,809.80, 144,631.68 and 57,060.30 is: 78,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,809.80 : 144,631.68 = 57,060.30 : x
  2. Step 2: Convert to fraction form
    104,809.80/144,631.68 = 57,060.30/x
  3. Step 3: Cross multiply
    104,809.80x = 144,631.68 × 57,060.30
  4. Step 4: Simplify right side
    104,809.80x = 8,252,727,050.30
  5. Step 5: Solve for x
    x = 8,252,727,050.30/104,809.80
  6. Step 6: Final answer
    x = 78,740.03

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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.