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Finding the Fourth Proportional to 626,645.60, 939,968.40 and 377,813.60

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Solution

The fourth proportional to 626,645.60, 939,968.40 and 377,813.60 is: 566,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,645.60 : 939,968.40 = 377,813.60 : x
  2. Step 2: Convert to fraction form
    626,645.60/939,968.40 = 377,813.60/x
  3. Step 3: Cross multiply
    626,645.60x = 939,968.40 × 377,813.60
  4. Step 4: Simplify right side
    626,645.60x = 355,132,845,090.24
  5. Step 5: Solve for x
    x = 355,132,845,090.24/626,645.60
  6. Step 6: Final answer
    x = 566,720.40

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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.