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Finding the Fourth Proportional to 291,999.60, 437,999.40 and 104,986.80

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Solution

The fourth proportional to 291,999.60, 437,999.40 and 104,986.80 is: 157,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,999.60 : 437,999.40 = 104,986.80 : x
  2. Step 2: Convert to fraction form
    291,999.60/437,999.40 = 104,986.80/x
  3. Step 3: Cross multiply
    291,999.60x = 437,999.40 × 104,986.80
  4. Step 4: Simplify right side
    291,999.60x = 45,984,155,407.92
  5. Step 5: Solve for x
    x = 45,984,155,407.92/291,999.60
  6. Step 6: Final answer
    x = 157,480.20

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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.