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Finding the Fourth Proportional to 105,508.86, 145,612.13 and 63,066.48

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Solution

The fourth proportional to 105,508.86, 145,612.13 and 63,066.48 is: 87,037.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,508.86 : 145,612.13 = 63,066.48 : x
  2. Step 2: Convert to fraction form
    105,508.86/145,612.13 = 63,066.48/x
  3. Step 3: Cross multiply
    105,508.86x = 145,612.13 × 63,066.48
  4. Step 4: Simplify right side
    105,508.86x = 9,183,244,169.07
  5. Step 5: Solve for x
    x = 9,183,244,169.07/105,508.86
  6. Step 6: Final answer
    x = 87,037.66

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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.