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Finding the Fourth Proportional to 349,211.60, 523,855.80 and 127,643.60

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Solution

The fourth proportional to 349,211.60, 523,855.80 and 127,643.60 is: 191,479.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,211.60 : 523,855.80 = 127,643.60 : x
  2. Step 2: Convert to fraction form
    349,211.60/523,855.80 = 127,643.60/x
  3. Step 3: Cross multiply
    349,211.60x = 523,855.80 × 127,643.60
  4. Step 4: Simplify right side
    349,211.60x = 66,866,840,192.88
  5. Step 5: Solve for x
    x = 66,866,840,192.88/349,211.60
  6. Step 6: Final answer
    x = 191,479.44

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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.