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Finding the Fourth Proportional to 93,453.15, 128,965.31 and 51,011.68

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Solution

The fourth proportional to 93,453.15, 128,965.31 and 51,011.68 is: 70,396.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,453.15 : 128,965.31 = 51,011.68 : x
  2. Step 2: Convert to fraction form
    93,453.15/128,965.31 = 51,011.68/x
  3. Step 3: Cross multiply
    93,453.15x = 128,965.31 × 51,011.68
  4. Step 4: Simplify right side
    93,453.15x = 6,578,737,124.82
  5. Step 5: Solve for x
    x = 6,578,737,124.82/93,453.15
  6. Step 6: Final answer
    x = 70,396.10

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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.