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Finding the Fourth Proportional to 86,293.49, 128,834.96 and 73,011.11

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Solution

The fourth proportional to 86,293.49, 128,834.96 and 73,011.11 is: 109,004.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,293.49 : 128,834.96 = 73,011.11 : x
  2. Step 2: Convert to fraction form
    86,293.49/128,834.96 = 73,011.11/x
  3. Step 3: Cross multiply
    86,293.49x = 128,834.96 × 73,011.11
  4. Step 4: Simplify right side
    86,293.49x = 9,406,382,427.18
  5. Step 5: Solve for x
    x = 9,406,382,427.18/86,293.49
  6. Step 6: Final answer
    x = 109,004.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.