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Finding the Fourth Proportional to 626,522.60, 939,783.90 and 361,101.80

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Solution

The fourth proportional to 626,522.60, 939,783.90 and 361,101.80 is: 541,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,522.60 : 939,783.90 = 361,101.80 : x
  2. Step 2: Convert to fraction form
    626,522.60/939,783.90 = 361,101.80/x
  3. Step 3: Cross multiply
    626,522.60x = 939,783.90 × 361,101.80
  4. Step 4: Simplify right side
    626,522.60x = 339,357,657,901.02
  5. Step 5: Solve for x
    x = 339,357,657,901.02/626,522.60
  6. Step 6: Final answer
    x = 541,652.70

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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.