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Finding the Fourth Proportional to 124,616.36, 171,968.32 and 70,900.20

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Solution

The fourth proportional to 124,616.36, 171,968.32 and 70,900.20 is: 97,840.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,616.36 : 171,968.32 = 70,900.20 : x
  2. Step 2: Convert to fraction form
    124,616.36/171,968.32 = 70,900.20/x
  3. Step 3: Cross multiply
    124,616.36x = 171,968.32 × 70,900.20
  4. Step 4: Simplify right side
    124,616.36x = 12,192,588,281.66
  5. Step 5: Solve for x
    x = 12,192,588,281.66/124,616.36
  6. Step 6: Final answer
    x = 97,840.99

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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.