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Finding the Fourth Proportional to 553,701.41, 830,621.42 and 216,698.54

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Solution

The fourth proportional to 553,701.41, 830,621.42 and 216,698.54 is: 325,074.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,701.41 : 830,621.42 = 216,698.54 : x
  2. Step 2: Convert to fraction form
    553,701.41/830,621.42 = 216,698.54/x
  3. Step 3: Cross multiply
    553,701.41x = 830,621.42 × 216,698.54
  4. Step 4: Simplify right side
    553,701.41x = 179,994,443,770.13
  5. Step 5: Solve for x
    x = 179,994,443,770.13/553,701.41
  6. Step 6: Final answer
    x = 325,074.93

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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.