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Finding the Fourth Proportional to 93,154.55, 128,551.25 and 54,399.03

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Solution

The fourth proportional to 93,154.55, 128,551.25 and 54,399.03 is: 75,069.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,154.55 : 128,551.25 = 54,399.03 : x
  2. Step 2: Convert to fraction form
    93,154.55/128,551.25 = 54,399.03/x
  3. Step 3: Cross multiply
    93,154.55x = 128,551.25 × 54,399.03
  4. Step 4: Simplify right side
    93,154.55x = 6,993,063,033.29
  5. Step 5: Solve for x
    x = 6,993,063,033.29/93,154.55
  6. Step 6: Final answer
    x = 75,069.47

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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.