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Finding the Fourth Proportional to 579,827.70, 869,741.55 and 540,461.70

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Solution

The fourth proportional to 579,827.70, 869,741.55 and 540,461.70 is: 810,692.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,827.70 : 869,741.55 = 540,461.70 : x
  2. Step 2: Convert to fraction form
    579,827.70/869,741.55 = 540,461.70/x
  3. Step 3: Cross multiply
    579,827.70x = 869,741.55 × 540,461.70
  4. Step 4: Simplify right side
    579,827.70x = 470,061,996,673.64
  5. Step 5: Solve for x
    x = 470,061,996,673.64/579,827.70
  6. Step 6: Final answer
    x = 810,692.55

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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.