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Finding the Fourth Proportional to 98,009.10, 146,722.05 and 64,766.70

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Solution

The fourth proportional to 98,009.10, 146,722.05 and 64,766.70 is: 96,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,009.10 : 146,722.05 = 64,766.70 : x
  2. Step 2: Convert to fraction form
    98,009.10/146,722.05 = 64,766.70/x
  3. Step 3: Cross multiply
    98,009.10x = 146,722.05 × 64,766.70
  4. Step 4: Simplify right side
    98,009.10x = 9,502,702,995.74
  5. Step 5: Solve for x
    x = 9,502,702,995.74/98,009.10
  6. Step 6: Final answer
    x = 96,957.35

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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.