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Finding the Fourth Proportional to 103,798.40, 143,245.76 and 58,494.40

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Solution

The fourth proportional to 103,798.40, 143,245.76 and 58,494.40 is: 80,724.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,798.40 : 143,245.76 = 58,494.40 : x
  2. Step 2: Convert to fraction form
    103,798.40/143,245.76 = 58,494.40/x
  3. Step 3: Cross multiply
    103,798.40x = 143,245.76 × 58,494.40
  4. Step 4: Simplify right side
    103,798.40x = 8,379,074,783.74
  5. Step 5: Solve for x
    x = 8,379,074,783.74/103,798.40
  6. Step 6: Final answer
    x = 80,724.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.