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Finding the Fourth Proportional to 124,416.64, 171,712.74 and 70,690.96

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Solution

The fourth proportional to 124,416.64, 171,712.74 and 70,690.96 is: 97,563.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,416.64 : 171,712.74 = 70,690.96 : x
  2. Step 2: Convert to fraction form
    124,416.64/171,712.74 = 70,690.96/x
  3. Step 3: Cross multiply
    124,416.64x = 171,712.74 × 70,690.96
  4. Step 4: Simplify right side
    124,416.64x = 12,138,538,434.83
  5. Step 5: Solve for x
    x = 12,138,538,434.83/124,416.64
  6. Step 6: Final answer
    x = 97,563.63

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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.