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Finding the Fourth Proportional to 605,853.20, 908,779.80 and 403,774.40

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Solution

The fourth proportional to 605,853.20, 908,779.80 and 403,774.40 is: 605,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,853.20 : 908,779.80 = 403,774.40 : x
  2. Step 2: Convert to fraction form
    605,853.20/908,779.80 = 403,774.40/x
  3. Step 3: Cross multiply
    605,853.20x = 908,779.80 × 403,774.40
  4. Step 4: Simplify right side
    605,853.20x = 366,942,018,477.12
  5. Step 5: Solve for x
    x = 366,942,018,477.12/605,853.20
  6. Step 6: Final answer
    x = 605,661.60

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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.