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Finding the Fourth Proportional to 623,563.51, 859,943.78 and 408,625.51

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Solution

The fourth proportional to 623,563.51, 859,943.78 and 408,625.51 is: 563,527.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,563.51 : 859,943.78 = 408,625.51 : x
  2. Step 2: Convert to fraction form
    623,563.51/859,943.78 = 408,625.51/x
  3. Step 3: Cross multiply
    623,563.51x = 859,943.78 × 408,625.51
  4. Step 4: Simplify right side
    623,563.51x = 351,394,963,630.70
  5. Step 5: Solve for x
    x = 351,394,963,630.70/623,563.51
  6. Step 6: Final answer
    x = 563,527.14

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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.