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Finding the Fourth Proportional to 93,127.38, 128,666.34 and 64,958.82

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Solution

The fourth proportional to 93,127.38, 128,666.34 and 64,958.82 is: 89,748.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,127.38 : 128,666.34 = 64,958.82 : x
  2. Step 2: Convert to fraction form
    93,127.38/128,666.34 = 64,958.82/x
  3. Step 3: Cross multiply
    93,127.38x = 128,666.34 × 64,958.82
  4. Step 4: Simplify right side
    93,127.38x = 8,358,013,620.12
  5. Step 5: Solve for x
    x = 8,358,013,620.12/93,127.38
  6. Step 6: Final answer
    x = 89,748.19

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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.