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Finding the Fourth Proportional to 349,332.80, 523,999.20 and 127,803.20

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Solution

The fourth proportional to 349,332.80, 523,999.20 and 127,803.20 is: 191,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,332.80 : 523,999.20 = 127,803.20 : x
  2. Step 2: Convert to fraction form
    349,332.80/523,999.20 = 127,803.20/x
  3. Step 3: Cross multiply
    349,332.80x = 523,999.20 × 127,803.20
  4. Step 4: Simplify right side
    349,332.80x = 66,968,774,557.44
  5. Step 5: Solve for x
    x = 66,968,774,557.44/349,332.80
  6. Step 6: Final answer
    x = 191,704.80

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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.