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Finding the Fourth Proportional to 98,953.34, 148,079.63 and 61,531.03

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Solution

The fourth proportional to 98,953.34, 148,079.63 and 61,531.03 is: 92,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,953.34 : 148,079.63 = 61,531.03 : x
  2. Step 2: Convert to fraction form
    98,953.34/148,079.63 = 61,531.03/x
  3. Step 3: Cross multiply
    98,953.34x = 148,079.63 × 61,531.03
  4. Step 4: Simplify right side
    98,953.34x = 9,111,491,848.26
  5. Step 5: Solve for x
    x = 9,111,491,848.26/98,953.34
  6. Step 6: Final answer
    x = 92,078.67

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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.