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Finding the Fourth Proportional to 30,415.56, 45,623.44 and 9,355.46

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Solution

The fourth proportional to 30,415.56, 45,623.44 and 9,355.46 is: 14,033.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,415.56 : 45,623.44 = 9,355.46 : x
  2. Step 2: Convert to fraction form
    30,415.56/45,623.44 = 9,355.46/x
  3. Step 3: Cross multiply
    30,415.56x = 45,623.44 × 9,355.46
  4. Step 4: Simplify right side
    30,415.56x = 426,828,206.19
  5. Step 5: Solve for x
    x = 426,828,206.19/30,415.56
  6. Step 6: Final answer
    x = 14,033.22

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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.