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Finding the Fourth Proportional to 505,948.60, 758,001.30 and 411,945.40

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Solution

The fourth proportional to 505,948.60, 758,001.30 and 411,945.40 is: 617,167.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,948.60 : 758,001.30 = 411,945.40 : x
  2. Step 2: Convert to fraction form
    505,948.60/758,001.30 = 411,945.40/x
  3. Step 3: Cross multiply
    505,948.60x = 758,001.30 × 411,945.40
  4. Step 4: Simplify right side
    505,948.60x = 312,255,148,729.02
  5. Step 5: Solve for x
    x = 312,255,148,729.02/505,948.60
  6. Step 6: Final answer
    x = 617,167.73

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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.