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Finding the Fourth Proportional to 519,290.88, 778,575.36 and 203,779.20

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Solution

The fourth proportional to 519,290.88, 778,575.36 and 203,779.20 is: 305,527.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,290.88 : 778,575.36 = 203,779.20 : x
  2. Step 2: Convert to fraction form
    519,290.88/778,575.36 = 203,779.20/x
  3. Step 3: Cross multiply
    519,290.88x = 778,575.36 × 203,779.20
  4. Step 4: Simplify right side
    519,290.88x = 158,657,464,000.51
  5. Step 5: Solve for x
    x = 158,657,464,000.51/519,290.88
  6. Step 6: Final answer
    x = 305,527.15

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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.