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Finding the Fourth Proportional to 105,760.16, 145,866.53 and 65,496.27

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Solution

The fourth proportional to 105,760.16, 145,866.53 and 65,496.27 is: 90,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,760.16 : 145,866.53 = 65,496.27 : x
  2. Step 2: Convert to fraction form
    105,760.16/145,866.53 = 65,496.27/x
  3. Step 3: Cross multiply
    105,760.16x = 145,866.53 × 65,496.27
  4. Step 4: Simplify right side
    105,760.16x = 9,553,713,305.36
  5. Step 5: Solve for x
    x = 9,553,713,305.36/105,760.16
  6. Step 6: Final answer
    x = 90,333.77

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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.