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Finding the Fourth Proportional to 155,243.64, 232,670.74 and 66,392.84

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Solution

The fourth proportional to 155,243.64, 232,670.74 and 66,392.84 is: 99,505.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,243.64 : 232,670.74 = 66,392.84 : x
  2. Step 2: Convert to fraction form
    155,243.64/232,670.74 = 66,392.84/x
  3. Step 3: Cross multiply
    155,243.64x = 232,670.74 × 66,392.84
  4. Step 4: Simplify right side
    155,243.64x = 15,447,671,213.50
  5. Step 5: Solve for x
    x = 15,447,671,213.50/155,243.64
  6. Step 6: Final answer
    x = 99,505.98

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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.