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Finding the Fourth Proportional to 236,185.55, 354,245.93 and 78,397.55

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Solution

The fourth proportional to 236,185.55, 354,245.93 and 78,397.55 is: 117,585.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,185.55 : 354,245.93 = 78,397.55 : x
  2. Step 2: Convert to fraction form
    236,185.55/354,245.93 = 78,397.55/x
  3. Step 3: Cross multiply
    236,185.55x = 354,245.93 × 78,397.55
  4. Step 4: Simplify right side
    236,185.55x = 27,772,012,617.48
  5. Step 5: Solve for x
    x = 27,772,012,617.48/236,185.55
  6. Step 6: Final answer
    x = 117,585.57

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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.