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Finding the Fourth Proportional to 78,489.51, 108,313.16 and 44,501.10

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Solution

The fourth proportional to 78,489.51, 108,313.16 and 44,501.10 is: 61,410.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,489.51 : 108,313.16 = 44,501.10 : x
  2. Step 2: Convert to fraction form
    78,489.51/108,313.16 = 44,501.10/x
  3. Step 3: Cross multiply
    78,489.51x = 108,313.16 × 44,501.10
  4. Step 4: Simplify right side
    78,489.51x = 4,820,054,541.97
  5. Step 5: Solve for x
    x = 4,820,054,541.97/78,489.51
  6. Step 6: Final answer
    x = 61,410.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.