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Finding the Fourth Proportional to 93,355.69, 128,808.70 and 53,066.28

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Solution

The fourth proportional to 93,355.69, 128,808.70 and 53,066.28 is: 73,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,355.69 : 128,808.70 = 53,066.28 : x
  2. Step 2: Convert to fraction form
    93,355.69/128,808.70 = 53,066.28/x
  3. Step 3: Cross multiply
    93,355.69x = 128,808.70 × 53,066.28
  4. Step 4: Simplify right side
    93,355.69x = 6,835,398,540.64
  5. Step 5: Solve for x
    x = 6,835,398,540.64/93,355.69
  6. Step 6: Final answer
    x = 73,218.87

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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.