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Finding the Fourth Proportional to 86,428.76, 119,271.74 and 46,684.76

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Solution

The fourth proportional to 86,428.76, 119,271.74 and 46,684.76 is: 64,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,428.76 : 119,271.74 = 46,684.76 : x
  2. Step 2: Convert to fraction form
    86,428.76/119,271.74 = 46,684.76/x
  3. Step 3: Cross multiply
    86,428.76x = 119,271.74 × 46,684.76
  4. Step 4: Simplify right side
    86,428.76x = 5,568,172,556.68
  5. Step 5: Solve for x
    x = 5,568,172,556.68/86,428.76
  6. Step 6: Final answer
    x = 64,425.00

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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.