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Finding the Fourth Proportional to 146,700, 220,078.28 and 62,458.60

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Solution

The fourth proportional to 146,700, 220,078.28 and 62,458.60 is: 93,699.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,700 : 220,078.28 = 62,458.60 : x
  2. Step 2: Convert to fraction form
    146,700/220,078.28 = 62,458.60/x
  3. Step 3: Cross multiply
    146,700x = 220,078.28 × 62,458.60
  4. Step 4: Simplify right side
    146,700x = 13,745,781,259.21
  5. Step 5: Solve for x
    x = 13,745,781,259.21/146,700
  6. Step 6: Final answer
    x = 93,699.94

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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.