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Finding the Fourth Proportional to 115,674.40, 173,900.40 and 98,567.20

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Solution

The fourth proportional to 115,674.40, 173,900.40 and 98,567.20 is: 148,182.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,674.40 : 173,900.40 = 98,567.20 : x
  2. Step 2: Convert to fraction form
    115,674.40/173,900.40 = 98,567.20/x
  3. Step 3: Cross multiply
    115,674.40x = 173,900.40 × 98,567.20
  4. Step 4: Simplify right side
    115,674.40x = 17,140,875,506.88
  5. Step 5: Solve for x
    x = 17,140,875,506.88/115,674.40
  6. Step 6: Final answer
    x = 148,182.10

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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.