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Finding the Fourth Proportional to 74,696.80, 112,045.20 and 47,048.80

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Solution

The fourth proportional to 74,696.80, 112,045.20 and 47,048.80 is: 70,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,696.80 : 112,045.20 = 47,048.80 : x
  2. Step 2: Convert to fraction form
    74,696.80/112,045.20 = 47,048.80/x
  3. Step 3: Cross multiply
    74,696.80x = 112,045.20 × 47,048.80
  4. Step 4: Simplify right side
    74,696.80x = 5,271,592,205.76
  5. Step 5: Solve for x
    x = 5,271,592,205.76/74,696.80
  6. Step 6: Final answer
    x = 70,573.20

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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.