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Finding the Fourth Proportional to 451,211.51, 622,955.01 and 290,346.12

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Solution

The fourth proportional to 451,211.51, 622,955.01 and 290,346.12 is: 400,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,211.51 : 622,955.01 = 290,346.12 : x
  2. Step 2: Convert to fraction form
    451,211.51/622,955.01 = 290,346.12/x
  3. Step 3: Cross multiply
    451,211.51x = 622,955.01 × 290,346.12
  4. Step 4: Simplify right side
    451,211.51x = 180,872,570,088.06
  5. Step 5: Solve for x
    x = 180,872,570,088.06/451,211.51
  6. Step 6: Final answer
    x = 400,859.83

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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.