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Finding the Fourth Proportional to 58,720.40, 88,080.60 and 57,748.40

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Solution

The fourth proportional to 58,720.40, 88,080.60 and 57,748.40 is: 86,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,720.40 : 88,080.60 = 57,748.40 : x
  2. Step 2: Convert to fraction form
    58,720.40/88,080.60 = 57,748.40/x
  3. Step 3: Cross multiply
    58,720.40x = 88,080.60 × 57,748.40
  4. Step 4: Simplify right side
    58,720.40x = 5,086,513,721.04
  5. Step 5: Solve for x
    x = 5,086,513,721.04/58,720.40
  6. Step 6: Final answer
    x = 86,622.60

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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.