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Finding the Fourth Proportional to 235,999.60, 353,999.40 and 78,252.40

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Solution

The fourth proportional to 235,999.60, 353,999.40 and 78,252.40 is: 117,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,999.60 : 353,999.40 = 78,252.40 : x
  2. Step 2: Convert to fraction form
    235,999.60/353,999.40 = 78,252.40/x
  3. Step 3: Cross multiply
    235,999.60x = 353,999.40 × 78,252.40
  4. Step 4: Simplify right side
    235,999.60x = 27,701,302,648.56
  5. Step 5: Solve for x
    x = 27,701,302,648.56/235,999.60
  6. Step 6: Final answer
    x = 117,378.60

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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.