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Finding the Fourth Proportional to 70,328.03, 105,480.67 and 25,975.67

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Solution

The fourth proportional to 70,328.03, 105,480.67 and 25,975.67 is: 38,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,328.03 : 105,480.67 = 25,975.67 : x
  2. Step 2: Convert to fraction form
    70,328.03/105,480.67 = 25,975.67/x
  3. Step 3: Cross multiply
    70,328.03x = 105,480.67 × 25,975.67
  4. Step 4: Simplify right side
    70,328.03x = 2,739,931,075.30
  5. Step 5: Solve for x
    x = 2,739,931,075.30/70,328.03
  6. Step 6: Final answer
    x = 38,959.30

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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.