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Finding the Fourth Proportional to 93,109.16, 128,620.23 and 89,652.63

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Solution

The fourth proportional to 93,109.16, 128,620.23 and 89,652.63 is: 123,845.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,109.16 : 128,620.23 = 89,652.63 : x
  2. Step 2: Convert to fraction form
    93,109.16/128,620.23 = 89,652.63/x
  3. Step 3: Cross multiply
    93,109.16x = 128,620.23 × 89,652.63
  4. Step 4: Simplify right side
    93,109.16x = 11,531,141,890.70
  5. Step 5: Solve for x
    x = 11,531,141,890.70/93,109.16
  6. Step 6: Final answer
    x = 123,845.41

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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.