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Finding the Fourth Proportional to 103,700.60, 155,459.70 and 61,476.60

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Solution

The fourth proportional to 103,700.60, 155,459.70 and 61,476.60 is: 92,160.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,700.60 : 155,459.70 = 61,476.60 : x
  2. Step 2: Convert to fraction form
    103,700.60/155,459.70 = 61,476.60/x
  3. Step 3: Cross multiply
    103,700.60x = 155,459.70 × 61,476.60
  4. Step 4: Simplify right side
    103,700.60x = 9,557,133,793.02
  5. Step 5: Solve for x
    x = 9,557,133,793.02/103,700.60
  6. Step 6: Final answer
    x = 92,160.83

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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.