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Finding the Fourth Proportional to 93,104.49, 128,461.80 and 54,865.60

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Solution

The fourth proportional to 93,104.49, 128,461.80 and 54,865.60 is: 75,701.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,104.49 : 128,461.80 = 54,865.60 : x
  2. Step 2: Convert to fraction form
    93,104.49/128,461.80 = 54,865.60/x
  3. Step 3: Cross multiply
    93,104.49x = 128,461.80 × 54,865.60
  4. Step 4: Simplify right side
    93,104.49x = 7,048,133,734.08
  5. Step 5: Solve for x
    x = 7,048,133,734.08/93,104.49
  6. Step 6: Final answer
    x = 75,701.33

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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.