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Finding the Fourth Proportional to 77,728.80, 116,593.20 and 59,066.40

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Solution

The fourth proportional to 77,728.80, 116,593.20 and 59,066.40 is: 88,599.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,728.80 : 116,593.20 = 59,066.40 : x
  2. Step 2: Convert to fraction form
    77,728.80/116,593.20 = 59,066.40/x
  3. Step 3: Cross multiply
    77,728.80x = 116,593.20 × 59,066.40
  4. Step 4: Simplify right side
    77,728.80x = 6,886,740,588.48
  5. Step 5: Solve for x
    x = 6,886,740,588.48/77,728.80
  6. Step 6: Final answer
    x = 88,599.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.