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Finding the Fourth Proportional to 90,858.79, 136,316.10 and 46,516.67

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Solution

The fourth proportional to 90,858.79, 136,316.10 and 46,516.67 is: 69,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,858.79 : 136,316.10 = 46,516.67 : x
  2. Step 2: Convert to fraction form
    90,858.79/136,316.10 = 46,516.67/x
  3. Step 3: Cross multiply
    90,858.79x = 136,316.10 × 46,516.67
  4. Step 4: Simplify right side
    90,858.79x = 6,340,971,039.39
  5. Step 5: Solve for x
    x = 6,340,971,039.39/90,858.79
  6. Step 6: Final answer
    x = 69,789.30

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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.