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Finding the Fourth Proportional to 190,303.58, 285,461.85 and 90,412.22

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Solution

The fourth proportional to 190,303.58, 285,461.85 and 90,412.22 is: 135,621.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,303.58 : 285,461.85 = 90,412.22 : x
  2. Step 2: Convert to fraction form
    190,303.58/285,461.85 = 90,412.22/x
  3. Step 3: Cross multiply
    190,303.58x = 285,461.85 × 90,412.22
  4. Step 4: Simplify right side
    190,303.58x = 25,809,239,583.81
  5. Step 5: Solve for x
    x = 25,809,239,583.81/190,303.58
  6. Step 6: Final answer
    x = 135,621.41

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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.