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Finding the Fourth Proportional to 112,458.76, 168,604.80 and 68,075.01

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Solution

The fourth proportional to 112,458.76, 168,604.80 and 68,075.01 is: 102,062.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,458.76 : 168,604.80 = 68,075.01 : x
  2. Step 2: Convert to fraction form
    112,458.76/168,604.80 = 68,075.01/x
  3. Step 3: Cross multiply
    112,458.76x = 168,604.80 × 68,075.01
  4. Step 4: Simplify right side
    112,458.76x = 11,477,773,446.05
  5. Step 5: Solve for x
    x = 11,477,773,446.05/112,458.76
  6. Step 6: Final answer
    x = 102,062.07

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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.