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Finding the Fourth Proportional to 148,605.76, 222,985.28 and 98,720.32

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Solution

The fourth proportional to 148,605.76, 222,985.28 and 98,720.32 is: 148,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,605.76 : 222,985.28 = 98,720.32 : x
  2. Step 2: Convert to fraction form
    148,605.76/222,985.28 = 98,720.32/x
  3. Step 3: Cross multiply
    148,605.76x = 222,985.28 × 98,720.32
  4. Step 4: Simplify right side
    148,605.76x = 22,013,178,196.89
  5. Step 5: Solve for x
    x = 22,013,178,196.89/148,605.76
  6. Step 6: Final answer
    x = 148,131.39

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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.