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Finding the Fourth Proportional to 147,403.80, 221,105.70 and 105,194.70

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Solution

The fourth proportional to 147,403.80, 221,105.70 and 105,194.70 is: 157,792.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,403.80 : 221,105.70 = 105,194.70 : x
  2. Step 2: Convert to fraction form
    147,403.80/221,105.70 = 105,194.70/x
  3. Step 3: Cross multiply
    147,403.80x = 221,105.70 × 105,194.70
  4. Step 4: Simplify right side
    147,403.80x = 23,259,147,779.79
  5. Step 5: Solve for x
    x = 23,259,147,779.79/147,403.80
  6. Step 6: Final answer
    x = 157,792.05

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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.