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Finding the Fourth Proportional to 114,984.40, 172,476.60 and 83,880.40

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Solution

The fourth proportional to 114,984.40, 172,476.60 and 83,880.40 is: 125,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,984.40 : 172,476.60 = 83,880.40 : x
  2. Step 2: Convert to fraction form
    114,984.40/172,476.60 = 83,880.40/x
  3. Step 3: Cross multiply
    114,984.40x = 172,476.60 × 83,880.40
  4. Step 4: Simplify right side
    114,984.40x = 14,467,406,198.64
  5. Step 5: Solve for x
    x = 14,467,406,198.64/114,984.40
  6. Step 6: Final answer
    x = 125,820.60

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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.