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Finding the Fourth Proportional to 623,558.51, 859,936.88 and 408,620.51

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Solution

The fourth proportional to 623,558.51, 859,936.88 and 408,620.51 is: 563,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,558.51 : 859,936.88 = 408,620.51 : x
  2. Step 2: Convert to fraction form
    623,558.51/859,936.88 = 408,620.51/x
  3. Step 3: Cross multiply
    623,558.51x = 859,936.88 × 408,620.51
  4. Step 4: Simplify right side
    623,558.51x = 351,387,844,430.31
  5. Step 5: Solve for x
    x = 351,387,844,430.31/623,558.51
  6. Step 6: Final answer
    x = 563,520.25

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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.