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Finding the Fourth Proportional to 280,923.67, 387,674.67 and 153,599.28

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Solution

The fourth proportional to 280,923.67, 387,674.67 and 153,599.28 is: 211,967.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,923.67 : 387,674.67 = 153,599.28 : x
  2. Step 2: Convert to fraction form
    280,923.67/387,674.67 = 153,599.28/x
  3. Step 3: Cross multiply
    280,923.67x = 387,674.67 × 153,599.28
  4. Step 4: Simplify right side
    280,923.67x = 59,546,550,186.24
  5. Step 5: Solve for x
    x = 59,546,550,186.24/280,923.67
  6. Step 6: Final answer
    x = 211,967.01

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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.