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Finding the Fourth Proportional to 58,838.19, 81,196.81 and 31,980.63

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Solution

The fourth proportional to 58,838.19, 81,196.81 and 31,980.63 is: 44,133.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,838.19 : 81,196.81 = 31,980.63 : x
  2. Step 2: Convert to fraction form
    58,838.19/81,196.81 = 31,980.63/x
  3. Step 3: Cross multiply
    58,838.19x = 81,196.81 × 31,980.63
  4. Step 4: Simplify right side
    58,838.19x = 2,596,724,571.90
  5. Step 5: Solve for x
    x = 2,596,724,571.90/58,838.19
  6. Step 6: Final answer
    x = 44,133.32

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1.5x scale

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.