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Finding the Fourth Proportional to 65,362.40, 98,046.80 and 34,258.40

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Solution

The fourth proportional to 65,362.40, 98,046.80 and 34,258.40 is: 51,389.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,362.40 : 98,046.80 = 34,258.40 : x
  2. Step 2: Convert to fraction form
    65,362.40/98,046.80 = 34,258.40/x
  3. Step 3: Cross multiply
    65,362.40x = 98,046.80 × 34,258.40
  4. Step 4: Simplify right side
    65,362.40x = 3,358,926,493.12
  5. Step 5: Solve for x
    x = 3,358,926,493.12/65,362.40
  6. Step 6: Final answer
    x = 51,389.28

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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.