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Finding the Fourth Proportional to 559,879,628.80, 839,819,443.20 and 329,730,246.40

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Solution

The fourth proportional to 559,879,628.80, 839,819,443.20 and 329,730,246.40 is: 494,595,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,879,628.80 : 839,819,443.20 = 329,730,246.40 : x
  2. Step 2: Convert to fraction form
    559,879,628.80/839,819,443.20 = 329,730,246.40/x
  3. Step 3: Cross multiply
    559,879,628.80x = 839,819,443.20 × 329,730,246.40
  4. Step 4: Simplify right side
    559,879,628.80x = 276,913,871,937,846,816
  5. Step 5: Solve for x
    x = 276,913,871,937,846,816/559,879,628.80
  6. Step 6: Final answer
    x = 494,595,369.60

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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.