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Finding the Fourth Proportional to 89,066.70, 122,913.90 and 48,782.16

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Solution

The fourth proportional to 89,066.70, 122,913.90 and 48,782.16 is: 67,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,066.70 : 122,913.90 = 48,782.16 : x
  2. Step 2: Convert to fraction form
    89,066.70/122,913.90 = 48,782.16/x
  3. Step 3: Cross multiply
    89,066.70x = 122,913.90 × 48,782.16
  4. Step 4: Simplify right side
    89,066.70x = 5,996,005,536.02
  5. Step 5: Solve for x
    x = 5,996,005,536.02/89,066.70
  6. Step 6: Final answer
    x = 67,320.40

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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.