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Finding the Fourth Proportional to 1,750,709, 2,626,063.50 and 421,013

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Solution

The fourth proportional to 1,750,709, 2,626,063.50 and 421,013 is: 631,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,750,709 : 2,626,063.50 = 421,013 : x
  2. Step 2: Convert to fraction form
    1,750,709/2,626,063.50 = 421,013/x
  3. Step 3: Cross multiply
    1,750,709x = 2,626,063.50 × 421,013
  4. Step 4: Simplify right side
    1,750,709x = 1,105,606,872,325.50
  5. Step 5: Solve for x
    x = 1,105,606,872,325.50/1,750,709
  6. Step 6: Final answer
    x = 631,519.50

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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.