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Finding the Fourth Proportional to 553,692.85, 830,608.53 and 216,689.96

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Solution

The fourth proportional to 553,692.85, 830,608.53 and 216,689.96 is: 325,062.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,692.85 : 830,608.53 = 216,689.96 : x
  2. Step 2: Convert to fraction form
    553,692.85/830,608.53 = 216,689.96/x
  3. Step 3: Cross multiply
    553,692.85x = 830,608.53 × 216,689.96
  4. Step 4: Simplify right side
    553,692.85x = 179,984,528,057.91
  5. Step 5: Solve for x
    x = 179,984,528,057.91/553,692.85
  6. Step 6: Final answer
    x = 325,062.04

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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.