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Finding the Fourth Proportional to 624,209.80, 936,314.70 and 561,224.20

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Solution

The fourth proportional to 624,209.80, 936,314.70 and 561,224.20 is: 841,836.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,209.80 : 936,314.70 = 561,224.20 : x
  2. Step 2: Convert to fraction form
    624,209.80/936,314.70 = 561,224.20/x
  3. Step 3: Cross multiply
    624,209.80x = 936,314.70 × 561,224.20
  4. Step 4: Simplify right side
    624,209.80x = 525,482,468,455.74
  5. Step 5: Solve for x
    x = 525,482,468,455.74/624,209.80
  6. Step 6: Final answer
    x = 841,836.30

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Double scale
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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.