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Finding the Fourth Proportional to 503,421.60, 755,132.40 and 411,261.60

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Solution

The fourth proportional to 503,421.60, 755,132.40 and 411,261.60 is: 616,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,421.60 : 755,132.40 = 411,261.60 : x
  2. Step 2: Convert to fraction form
    503,421.60/755,132.40 = 411,261.60/x
  3. Step 3: Cross multiply
    503,421.60x = 755,132.40 × 411,261.60
  4. Step 4: Simplify right side
    503,421.60x = 310,556,959,035.84
  5. Step 5: Solve for x
    x = 310,556,959,035.84/503,421.60
  6. Step 6: Final answer
    x = 616,892.40

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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.