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Finding the Fourth Proportional to 539,085.40, 808,628.10 and 414,669.40

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Solution

The fourth proportional to 539,085.40, 808,628.10 and 414,669.40 is: 622,004.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,085.40 : 808,628.10 = 414,669.40 : x
  2. Step 2: Convert to fraction form
    539,085.40/808,628.10 = 414,669.40/x
  3. Step 3: Cross multiply
    539,085.40x = 808,628.10 × 414,669.40
  4. Step 4: Simplify right side
    539,085.40x = 335,313,329,050.14
  5. Step 5: Solve for x
    x = 335,313,329,050.14/539,085.40
  6. Step 6: Final answer
    x = 622,004.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.