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Finding the Fourth Proportional to 85,601.58, 128,332.77 and 35,718.84

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Solution

The fourth proportional to 85,601.58, 128,332.77 and 35,718.84 is: 53,549.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,601.58 : 128,332.77 = 35,718.84 : x
  2. Step 2: Convert to fraction form
    85,601.58/128,332.77 = 35,718.84/x
  3. Step 3: Cross multiply
    85,601.58x = 128,332.77 × 35,718.84
  4. Step 4: Simplify right side
    85,601.58x = 4,583,897,678.39
  5. Step 5: Solve for x
    x = 4,583,897,678.39/85,601.58
  6. Step 6: Final answer
    x = 53,549.22

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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.