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Finding the Fourth Proportional to 124,522.70, 171,840.50 and 70,807.72

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Solution

The fourth proportional to 124,522.70, 171,840.50 and 70,807.72 is: 97,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,522.70 : 171,840.50 = 70,807.72 : x
  2. Step 2: Convert to fraction form
    124,522.70/171,840.50 = 70,807.72/x
  3. Step 3: Cross multiply
    124,522.70x = 171,840.50 × 70,807.72
  4. Step 4: Simplify right side
    124,522.70x = 12,167,634,008.66
  5. Step 5: Solve for x
    x = 12,167,634,008.66/124,522.70
  6. Step 6: Final answer
    x = 97,714.18

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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.