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Finding the Fourth Proportional to 89,116.67, 122,981.28 and 48,830.51

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Solution

The fourth proportional to 89,116.67, 122,981.28 and 48,830.51 is: 67,386.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,116.67 : 122,981.28 = 48,830.51 : x
  2. Step 2: Convert to fraction form
    89,116.67/122,981.28 = 48,830.51/x
  3. Step 3: Cross multiply
    89,116.67x = 122,981.28 × 48,830.51
  4. Step 4: Simplify right side
    89,116.67x = 6,005,238,622.85
  5. Step 5: Solve for x
    x = 6,005,238,622.85/89,116.67
  6. Step 6: Final answer
    x = 67,386.25

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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.