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Finding the Fourth Proportional to 132,283.20, 198,424.80 and 70,075.20

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Solution

The fourth proportional to 132,283.20, 198,424.80 and 70,075.20 is: 105,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,283.20 : 198,424.80 = 70,075.20 : x
  2. Step 2: Convert to fraction form
    132,283.20/198,424.80 = 70,075.20/x
  3. Step 3: Cross multiply
    132,283.20x = 198,424.80 × 70,075.20
  4. Step 4: Simplify right side
    132,283.20x = 13,904,657,544.96
  5. Step 5: Solve for x
    x = 13,904,657,544.96/132,283.20
  6. Step 6: Final answer
    x = 105,112.80

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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.