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Finding the Fourth Proportional to 95,422.40, 143,133.60 and 86,674.40

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Solution

The fourth proportional to 95,422.40, 143,133.60 and 86,674.40 is: 130,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,422.40 : 143,133.60 = 86,674.40 : x
  2. Step 2: Convert to fraction form
    95,422.40/143,133.60 = 86,674.40/x
  3. Step 3: Cross multiply
    95,422.40x = 143,133.60 × 86,674.40
  4. Step 4: Simplify right side
    95,422.40x = 12,406,018,899.84
  5. Step 5: Solve for x
    x = 12,406,018,899.84/95,422.40
  6. Step 6: Final answer
    x = 130,011.60

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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.