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Finding the Fourth Proportional to 100,956.94, 139,315.59 and 58,529.26

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Solution

The fourth proportional to 100,956.94, 139,315.59 and 58,529.26 is: 80,767.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,956.94 : 139,315.59 = 58,529.26 : x
  2. Step 2: Convert to fraction form
    100,956.94/139,315.59 = 58,529.26/x
  3. Step 3: Cross multiply
    100,956.94x = 139,315.59 × 58,529.26
  4. Step 4: Simplify right side
    100,956.94x = 8,154,038,389.16
  5. Step 5: Solve for x
    x = 8,154,038,389.16/100,956.94
  6. Step 6: Final answer
    x = 80,767.49

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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.