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Finding the Fourth Proportional to 98,528.25, 135,969.53 and 53,816.25

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Solution

The fourth proportional to 98,528.25, 135,969.53 and 53,816.25 is: 74,266.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,528.25 : 135,969.53 = 53,816.25 : x
  2. Step 2: Convert to fraction form
    98,528.25/135,969.53 = 53,816.25/x
  3. Step 3: Cross multiply
    98,528.25x = 135,969.53 × 53,816.25
  4. Step 4: Simplify right side
    98,528.25x = 7,317,369,949.78
  5. Step 5: Solve for x
    x = 7,317,369,949.78/98,528.25
  6. Step 6: Final answer
    x = 74,266.72

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1.5x scale

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.