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Finding the Fourth Proportional to 120,822.70, 169,501.70 and 120,822.70

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Solution

The fourth proportional to 120,822.70, 169,501.70 and 120,822.70 is: 169,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,822.70 : 169,501.70 = 120,822.70 : x
  2. Step 2: Convert to fraction form
    120,822.70/169,501.70 = 120,822.70/x
  3. Step 3: Cross multiply
    120,822.70x = 169,501.70 × 120,822.70
  4. Step 4: Simplify right side
    120,822.70x = 20,479,653,048.59
  5. Step 5: Solve for x
    x = 20,479,653,048.59/120,822.70
  6. Step 6: Final answer
    x = 169,501.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.