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Finding the Fourth Proportional to 660,178.80, 911,049.48 and 373,754.16

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Solution

The fourth proportional to 660,178.80, 911,049.48 and 373,754.16 is: 515,782.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,178.80 : 911,049.48 = 373,754.16 : x
  2. Step 2: Convert to fraction form
    660,178.80/911,049.48 = 373,754.16/x
  3. Step 3: Cross multiply
    660,178.80x = 911,049.48 × 373,754.16
  4. Step 4: Simplify right side
    660,178.80x = 340,508,533,115.84
  5. Step 5: Solve for x
    x = 340,508,533,115.84/660,178.80
  6. Step 6: Final answer
    x = 515,782.29

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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.