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Finding the Fourth Proportional to 73,412.80, 103,011.20 and 73,412.80

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Solution

The fourth proportional to 73,412.80, 103,011.20 and 73,412.80 is: 103,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,412.80 : 103,011.20 = 73,412.80 : x
  2. Step 2: Convert to fraction form
    73,412.80/103,011.20 = 73,412.80/x
  3. Step 3: Cross multiply
    73,412.80x = 103,011.20 × 73,412.80
  4. Step 4: Simplify right side
    73,412.80x = 7,562,340,623.36
  5. Step 5: Solve for x
    x = 7,562,340,623.36/73,412.80
  6. Step 6: Final answer
    x = 103,011.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.