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Finding the Fourth Proportional to 280,993.37, 387,762.97 and 153,666.23

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Solution

The fourth proportional to 280,993.37, 387,762.97 and 153,666.23 is: 212,055.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,993.37 : 387,762.97 = 153,666.23 : x
  2. Step 2: Convert to fraction form
    280,993.37/387,762.97 = 153,666.23/x
  3. Step 3: Cross multiply
    280,993.37x = 387,762.97 × 153,666.23
  4. Step 4: Simplify right side
    280,993.37x = 59,586,073,733.50
  5. Step 5: Solve for x
    x = 59,586,073,733.50/280,993.37
  6. Step 6: Final answer
    x = 212,055.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.