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Finding the Fourth Proportional to 619,308.80, 927,580.80 and 477,958.40

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Solution

The fourth proportional to 619,308.80, 927,580.80 and 477,958.40 is: 715,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,308.80 : 927,580.80 = 477,958.40 : x
  2. Step 2: Convert to fraction form
    619,308.80/927,580.80 = 477,958.40/x
  3. Step 3: Cross multiply
    619,308.80x = 927,580.80 × 477,958.40
  4. Step 4: Simplify right side
    619,308.80x = 443,345,035,038.72
  5. Step 5: Solve for x
    x = 443,345,035,038.72/619,308.80
  6. Step 6: Final answer
    x = 715,870.72

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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.