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Finding the Fourth Proportional to 140,870.64, 211,569.20 and 124,009.68

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Solution

The fourth proportional to 140,870.64, 211,569.20 and 124,009.68 is: 186,246.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,870.64 : 211,569.20 = 124,009.68 : x
  2. Step 2: Convert to fraction form
    140,870.64/211,569.20 = 124,009.68/x
  3. Step 3: Cross multiply
    140,870.64x = 211,569.20 × 124,009.68
  4. Step 4: Simplify right side
    140,870.64x = 26,236,628,789.86
  5. Step 5: Solve for x
    x = 26,236,628,789.86/140,870.64
  6. Step 6: Final answer
    x = 186,246.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.