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Finding the Fourth Proportional to 605,430.10, 908,145.15 and 540,111.70

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Solution

The fourth proportional to 605,430.10, 908,145.15 and 540,111.70 is: 810,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,430.10 : 908,145.15 = 540,111.70 : x
  2. Step 2: Convert to fraction form
    605,430.10/908,145.15 = 540,111.70/x
  3. Step 3: Cross multiply
    605,430.10x = 908,145.15 × 540,111.70
  4. Step 4: Simplify right side
    605,430.10x = 490,499,820,813.26
  5. Step 5: Solve for x
    x = 490,499,820,813.26/605,430.10
  6. Step 6: Final answer
    x = 810,167.55

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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.