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Finding the Fourth Proportional to 98,303.46, 135,607.05 and 66,483.06

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Solution

The fourth proportional to 98,303.46, 135,607.05 and 66,483.06 is: 91,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,303.46 : 135,607.05 = 66,483.06 : x
  2. Step 2: Convert to fraction form
    98,303.46/135,607.05 = 66,483.06/x
  3. Step 3: Cross multiply
    98,303.46x = 135,607.05 × 66,483.06
  4. Step 4: Simplify right side
    98,303.46x = 9,015,571,641.57
  5. Step 5: Solve for x
    x = 9,015,571,641.57/98,303.46
  6. Step 6: Final answer
    x = 91,711.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.