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Finding the Fourth Proportional to 60,068.59, 90,075.54 and 31,981.43

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Solution

The fourth proportional to 60,068.59, 90,075.54 and 31,981.43 is: 47,957.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,068.59 : 90,075.54 = 31,981.43 : x
  2. Step 2: Convert to fraction form
    60,068.59/90,075.54 = 31,981.43/x
  3. Step 3: Cross multiply
    60,068.59x = 90,075.54 × 31,981.43
  4. Step 4: Simplify right side
    60,068.59x = 2,880,744,922.34
  5. Step 5: Solve for x
    x = 2,880,744,922.34/60,068.59
  6. Step 6: Final answer
    x = 47,957.59

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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.