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Finding the Fourth Proportional to 70,009.86, 96,611.76 and 38,179.38

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Solution

The fourth proportional to 70,009.86, 96,611.76 and 38,179.38 is: 52,686.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,009.86 : 96,611.76 = 38,179.38 : x
  2. Step 2: Convert to fraction form
    70,009.86/96,611.76 = 38,179.38/x
  3. Step 3: Cross multiply
    70,009.86x = 96,611.76 × 38,179.38
  4. Step 4: Simplify right side
    70,009.86x = 3,688,577,097.51
  5. Step 5: Solve for x
    x = 3,688,577,097.51/70,009.86
  6. Step 6: Final answer
    x = 52,686.54

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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.