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Finding the Fourth Proportional to 114,904.40, 172,356.60 and 83,800.40

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Solution

The fourth proportional to 114,904.40, 172,356.60 and 83,800.40 is: 125,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,904.40 : 172,356.60 = 83,800.40 : x
  2. Step 2: Convert to fraction form
    114,904.40/172,356.60 = 83,800.40/x
  3. Step 3: Cross multiply
    114,904.40x = 172,356.60 × 83,800.40
  4. Step 4: Simplify right side
    114,904.40x = 14,443,552,022.64
  5. Step 5: Solve for x
    x = 14,443,552,022.64/114,904.40
  6. Step 6: Final answer
    x = 125,700.60

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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.