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Finding the Fourth Proportional to 623,561.39, 859,940.84 and 408,623.39

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Solution

The fourth proportional to 623,561.39, 859,940.84 and 408,623.39 is: 563,524.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,561.39 : 859,940.84 = 408,623.39 : x
  2. Step 2: Convert to fraction form
    623,561.39/859,940.84 = 408,623.39/x
  3. Step 3: Cross multiply
    623,561.39x = 859,940.84 × 408,623.39
  4. Step 4: Simplify right side
    623,561.39x = 351,391,937,962.10
  5. Step 5: Solve for x
    x = 351,391,937,962.10/623,561.39
  6. Step 6: Final answer
    x = 563,524.21

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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.