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Finding the Fourth Proportional to 106,798.20, 147,348.21 and 70,994.27

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Solution

The fourth proportional to 106,798.20, 147,348.21 and 70,994.27 is: 97,949.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,798.20 : 147,348.21 = 70,994.27 : x
  2. Step 2: Convert to fraction form
    106,798.20/147,348.21 = 70,994.27/x
  3. Step 3: Cross multiply
    106,798.20x = 147,348.21 × 70,994.27
  4. Step 4: Simplify right side
    106,798.20x = 10,460,879,239.36
  5. Step 5: Solve for x
    x = 10,460,879,239.36/106,798.20
  6. Step 6: Final answer
    x = 97,949.96

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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.