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Finding the Fourth Proportional to 58,457.04, 87,684.72 and 54,721.32

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Solution

The fourth proportional to 58,457.04, 87,684.72 and 54,721.32 is: 82,081.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,457.04 : 87,684.72 = 54,721.32 : x
  2. Step 2: Convert to fraction form
    58,457.04/87,684.72 = 54,721.32/x
  3. Step 3: Cross multiply
    58,457.04x = 87,684.72 × 54,721.32
  4. Step 4: Simplify right side
    58,457.04x = 4,798,223,622.23
  5. Step 5: Solve for x
    x = 4,798,223,622.23/58,457.04
  6. Step 6: Final answer
    x = 82,081.19

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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.