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Finding the Fourth Proportional to 98,492.52, 147,636.60 and 45,858.72

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Solution

The fourth proportional to 98,492.52, 147,636.60 and 45,858.72 is: 68,740.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,492.52 : 147,636.60 = 45,858.72 : x
  2. Step 2: Convert to fraction form
    98,492.52/147,636.60 = 45,858.72/x
  3. Step 3: Cross multiply
    98,492.52x = 147,636.60 × 45,858.72
  4. Step 4: Simplify right side
    98,492.52x = 6,770,425,501.15
  5. Step 5: Solve for x
    x = 6,770,425,501.15/98,492.52
  6. Step 6: Final answer
    x = 68,740.50

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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.