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Finding the Fourth Proportional to 76,219.55, 105,180.19 and 43,955.53

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Solution

The fourth proportional to 76,219.55, 105,180.19 and 43,955.53 is: 60,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,219.55 : 105,180.19 = 43,955.53 : x
  2. Step 2: Convert to fraction form
    76,219.55/105,180.19 = 43,955.53/x
  3. Step 3: Cross multiply
    76,219.55x = 105,180.19 × 43,955.53
  4. Step 4: Simplify right side
    76,219.55x = 4,623,251,068.08
  5. Step 5: Solve for x
    x = 4,623,251,068.08/76,219.55
  6. Step 6: Final answer
    x = 60,657.02

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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.