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Finding the Fourth Proportional to 357,119.60, 492,830.20 and 195,971.76

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Solution

The fourth proportional to 357,119.60, 492,830.20 and 195,971.76 is: 270,443.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,119.60 : 492,830.20 = 195,971.76 : x
  2. Step 2: Convert to fraction form
    357,119.60/492,830.20 = 195,971.76/x
  3. Step 3: Cross multiply
    357,119.60x = 492,830.20 × 195,971.76
  4. Step 4: Simplify right side
    357,119.60x = 96,580,801,675.15
  5. Step 5: Solve for x
    x = 96,580,801,675.15/357,119.60
  6. Step 6: Final answer
    x = 270,443.86

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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.