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Finding the Fourth Proportional to 626,105, 939,157.50 and 293,681

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Solution

The fourth proportional to 626,105, 939,157.50 and 293,681 is: 440,521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,105 : 939,157.50 = 293,681 : x
  2. Step 2: Convert to fraction form
    626,105/939,157.50 = 293,681/x
  3. Step 3: Cross multiply
    626,105x = 939,157.50 × 293,681
  4. Step 4: Simplify right side
    626,105x = 275,812,713,757.50
  5. Step 5: Solve for x
    x = 275,812,713,757.50/626,105
  6. Step 6: Final answer
    x = 440,521.50

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Half scale
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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.