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Finding the Fourth Proportional to 114,428.80, 171,643.20 and 97,148.80

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Solution

The fourth proportional to 114,428.80, 171,643.20 and 97,148.80 is: 145,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,428.80 : 171,643.20 = 97,148.80 : x
  2. Step 2: Convert to fraction form
    114,428.80/171,643.20 = 97,148.80/x
  3. Step 3: Cross multiply
    114,428.80x = 171,643.20 × 97,148.80
  4. Step 4: Simplify right side
    114,428.80x = 16,674,930,908.16
  5. Step 5: Solve for x
    x = 16,674,930,908.16/114,428.80
  6. Step 6: Final answer
    x = 145,723.20

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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.