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Finding the Fourth Proportional to 190,872.20, 286,308.30 and 112,075.40

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Solution

The fourth proportional to 190,872.20, 286,308.30 and 112,075.40 is: 168,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,872.20 : 286,308.30 = 112,075.40 : x
  2. Step 2: Convert to fraction form
    190,872.20/286,308.30 = 112,075.40/x
  3. Step 3: Cross multiply
    190,872.20x = 286,308.30 × 112,075.40
  4. Step 4: Simplify right side
    190,872.20x = 32,088,117,245.82
  5. Step 5: Solve for x
    x = 32,088,117,245.82/190,872.20
  6. Step 6: Final answer
    x = 168,113.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.