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Finding the Fourth Proportional to 70,966.50, 106,449.75 and 39,804.18

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Solution

The fourth proportional to 70,966.50, 106,449.75 and 39,804.18 is: 59,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,966.50 : 106,449.75 = 39,804.18 : x
  2. Step 2: Convert to fraction form
    70,966.50/106,449.75 = 39,804.18/x
  3. Step 3: Cross multiply
    70,966.50x = 106,449.75 × 39,804.18
  4. Step 4: Simplify right side
    70,966.50x = 4,237,145,009.96
  5. Step 5: Solve for x
    x = 4,237,145,009.96/70,966.50
  6. Step 6: Final answer
    x = 59,706.27

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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.