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Finding the Fourth Proportional to 58,870.90, 81,239.36 and 33,378.98

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Solution

The fourth proportional to 58,870.90, 81,239.36 and 33,378.98 is: 46,061.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,870.90 : 81,239.36 = 33,378.98 : x
  2. Step 2: Convert to fraction form
    58,870.90/81,239.36 = 33,378.98/x
  3. Step 3: Cross multiply
    58,870.90x = 81,239.36 × 33,378.98
  4. Step 4: Simplify right side
    58,870.90x = 2,711,686,566.46
  5. Step 5: Solve for x
    x = 2,711,686,566.46/58,870.90
  6. Step 6: Final answer
    x = 46,061.58

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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.