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Finding the Fourth Proportional to 98,967.80, 148,484.28 and 65,818.28

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Solution

The fourth proportional to 98,967.80, 148,484.28 and 65,818.28 is: 98,749.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,967.80 : 148,484.28 = 65,818.28 : x
  2. Step 2: Convert to fraction form
    98,967.80/148,484.28 = 65,818.28/x
  3. Step 3: Cross multiply
    98,967.80x = 148,484.28 × 65,818.28
  4. Step 4: Simplify right side
    98,967.80x = 9,772,979,916.64
  5. Step 5: Solve for x
    x = 9,772,979,916.64/98,967.80
  6. Step 6: Final answer
    x = 98,749.09

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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.