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Finding the Fourth Proportional to 99,076.70, 148,656.74 and 61,668.07

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Solution

The fourth proportional to 99,076.70, 148,656.74 and 61,668.07 is: 92,528.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,076.70 : 148,656.74 = 61,668.07 : x
  2. Step 2: Convert to fraction form
    99,076.70/148,656.74 = 61,668.07/x
  3. Step 3: Cross multiply
    99,076.70x = 148,656.74 × 61,668.07
  4. Step 4: Simplify right side
    99,076.70x = 9,167,374,248.29
  5. Step 5: Solve for x
    x = 9,167,374,248.29/99,076.70
  6. Step 6: Final answer
    x = 92,528.05

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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.