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Finding the Fourth Proportional to 276,075.12, 414,117.86 and 86,531.30

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Solution

The fourth proportional to 276,075.12, 414,117.86 and 86,531.30 is: 129,798.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,075.12 : 414,117.86 = 86,531.30 : x
  2. Step 2: Convert to fraction form
    276,075.12/414,117.86 = 86,531.30/x
  3. Step 3: Cross multiply
    276,075.12x = 414,117.86 × 86,531.30
  4. Step 4: Simplify right side
    276,075.12x = 35,834,156,779.02
  5. Step 5: Solve for x
    x = 35,834,156,779.02/276,075.12
  6. Step 6: Final answer
    x = 129,798.57

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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.