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Finding the Fourth Proportional to 93,685.69, 129,288.08 and 51,245.13

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Solution

The fourth proportional to 93,685.69, 129,288.08 and 51,245.13 is: 70,719.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,685.69 : 129,288.08 = 51,245.13 : x
  2. Step 2: Convert to fraction form
    93,685.69/129,288.08 = 51,245.13/x
  3. Step 3: Cross multiply
    93,685.69x = 129,288.08 × 51,245.13
  4. Step 4: Simplify right side
    93,685.69x = 6,625,384,210.82
  5. Step 5: Solve for x
    x = 6,625,384,210.82/93,685.69
  6. Step 6: Final answer
    x = 70,719.28

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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.