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Finding the Fourth Proportional to 129,614.40, 194,421.60 and 46,497.60

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Solution

The fourth proportional to 129,614.40, 194,421.60 and 46,497.60 is: 69,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,614.40 : 194,421.60 = 46,497.60 : x
  2. Step 2: Convert to fraction form
    129,614.40/194,421.60 = 46,497.60/x
  3. Step 3: Cross multiply
    129,614.40x = 194,421.60 × 46,497.60
  4. Step 4: Simplify right side
    129,614.40x = 9,040,137,788.16
  5. Step 5: Solve for x
    x = 9,040,137,788.16/129,614.40
  6. Step 6: Final answer
    x = 69,746.40

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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.