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Finding the Fourth Proportional to 70,840.40, 106,260.60 and 59,435.60

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Solution

The fourth proportional to 70,840.40, 106,260.60 and 59,435.60 is: 89,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,840.40 : 106,260.60 = 59,435.60 : x
  2. Step 2: Convert to fraction form
    70,840.40/106,260.60 = 59,435.60/x
  3. Step 3: Cross multiply
    70,840.40x = 106,260.60 × 59,435.60
  4. Step 4: Simplify right side
    70,840.40x = 6,315,662,517.36
  5. Step 5: Solve for x
    x = 6,315,662,517.36/70,840.40
  6. Step 6: Final answer
    x = 89,153.40

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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.