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Finding the Fourth Proportional to 210,846.60, 316,313.10 and 70,705.80

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Solution

The fourth proportional to 210,846.60, 316,313.10 and 70,705.80 is: 106,073.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,846.60 : 316,313.10 = 70,705.80 : x
  2. Step 2: Convert to fraction form
    210,846.60/316,313.10 = 70,705.80/x
  3. Step 3: Cross multiply
    210,846.60x = 316,313.10 × 70,705.80
  4. Step 4: Simplify right side
    210,846.60x = 22,365,170,785.98
  5. Step 5: Solve for x
    x = 22,365,170,785.98/210,846.60
  6. Step 6: Final answer
    x = 106,073.19

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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.