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Finding the Fourth Proportional to 116,720.40, 175,080.60 and 57,671.40

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Solution

The fourth proportional to 116,720.40, 175,080.60 and 57,671.40 is: 86,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,720.40 : 175,080.60 = 57,671.40 : x
  2. Step 2: Convert to fraction form
    116,720.40/175,080.60 = 57,671.40/x
  3. Step 3: Cross multiply
    116,720.40x = 175,080.60 × 57,671.40
  4. Step 4: Simplify right side
    116,720.40x = 10,097,143,314.84
  5. Step 5: Solve for x
    x = 10,097,143,314.84/116,720.40
  6. Step 6: Final answer
    x = 86,507.10

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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.