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Finding the Fourth Proportional to 553,637.40, 830,456.10 and 198,687.30

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Solution

The fourth proportional to 553,637.40, 830,456.10 and 198,687.30 is: 298,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,637.40 : 830,456.10 = 198,687.30 : x
  2. Step 2: Convert to fraction form
    553,637.40/830,456.10 = 198,687.30/x
  3. Step 3: Cross multiply
    553,637.40x = 830,456.10 × 198,687.30
  4. Step 4: Simplify right side
    553,637.40x = 165,001,080,277.53
  5. Step 5: Solve for x
    x = 165,001,080,277.53/553,637.40
  6. Step 6: Final answer
    x = 298,030.95

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Similar ratio
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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.