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Finding the Fourth Proportional to 29,798.40, 44,722.80 and 12,280.80

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Solution

The fourth proportional to 29,798.40, 44,722.80 and 12,280.80 is: 18,431.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,798.40 : 44,722.80 = 12,280.80 : x
  2. Step 2: Convert to fraction form
    29,798.40/44,722.80 = 12,280.80/x
  3. Step 3: Cross multiply
    29,798.40x = 44,722.80 × 12,280.80
  4. Step 4: Simplify right side
    29,798.40x = 549,231,762.24
  5. Step 5: Solve for x
    x = 549,231,762.24/29,798.40
  6. Step 6: Final answer
    x = 18,431.59

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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.