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Finding the Fourth Proportional to 291,628.80, 437,443.17 and 70,012.80

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Solution

The fourth proportional to 291,628.80, 437,443.17 and 70,012.80 is: 105,019.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,628.80 : 437,443.17 = 70,012.80 : x
  2. Step 2: Convert to fraction form
    291,628.80/437,443.17 = 70,012.80/x
  3. Step 3: Cross multiply
    291,628.80x = 437,443.17 × 70,012.80
  4. Step 4: Simplify right side
    291,628.80x = 30,626,621,172.58
  5. Step 5: Solve for x
    x = 30,626,621,172.58/291,628.80
  6. Step 6: Final answer
    x = 105,019.19

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1.5x scale

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.