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Finding the Fourth Proportional to 145,928.60, 218,771.40 and 61,753.40

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Solution

The fourth proportional to 145,928.60, 218,771.40 and 61,753.40 is: 92,578.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,928.60 : 218,771.40 = 61,753.40 : x
  2. Step 2: Convert to fraction form
    145,928.60/218,771.40 = 61,753.40/x
  3. Step 3: Cross multiply
    145,928.60x = 218,771.40 × 61,753.40
  4. Step 4: Simplify right side
    145,928.60x = 13,509,877,772.76
  5. Step 5: Solve for x
    x = 13,509,877,772.76/145,928.60
  6. Step 6: Final answer
    x = 92,578.68

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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.