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Finding the Fourth Proportional to 93,316.10, 128,899.13 and 69,166.02

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Solution

The fourth proportional to 93,316.10, 128,899.13 and 69,166.02 is: 95,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,316.10 : 128,899.13 = 69,166.02 : x
  2. Step 2: Convert to fraction form
    93,316.10/128,899.13 = 69,166.02/x
  3. Step 3: Cross multiply
    93,316.10x = 128,899.13 × 69,166.02
  4. Step 4: Simplify right side
    93,316.10x = 8,915,439,803.56
  5. Step 5: Solve for x
    x = 8,915,439,803.56/93,316.10
  6. Step 6: Final answer
    x = 95,540.21

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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.