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Finding the Fourth Proportional to 122,713.20, 184,069.80 and 70,225.20

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Solution

The fourth proportional to 122,713.20, 184,069.80 and 70,225.20 is: 105,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,713.20 : 184,069.80 = 70,225.20 : x
  2. Step 2: Convert to fraction form
    122,713.20/184,069.80 = 70,225.20/x
  3. Step 3: Cross multiply
    122,713.20x = 184,069.80 × 70,225.20
  4. Step 4: Simplify right side
    122,713.20x = 12,926,338,518.96
  5. Step 5: Solve for x
    x = 12,926,338,518.96/122,713.20
  6. Step 6: Final answer
    x = 105,337.80

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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.