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Finding the Fourth Proportional to 70,009.60, 105,014.40 and 59,074.60

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Solution

The fourth proportional to 70,009.60, 105,014.40 and 59,074.60 is: 88,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,009.60 : 105,014.40 = 59,074.60 : x
  2. Step 2: Convert to fraction form
    70,009.60/105,014.40 = 59,074.60/x
  3. Step 3: Cross multiply
    70,009.60x = 105,014.40 × 59,074.60
  4. Step 4: Simplify right side
    70,009.60x = 6,203,683,674.24
  5. Step 5: Solve for x
    x = 6,203,683,674.24/70,009.60
  6. Step 6: Final answer
    x = 88,611.90

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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.