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Finding the Fourth Proportional to 412,831.30, 619,246.95 and 369,528.70

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Solution

The fourth proportional to 412,831.30, 619,246.95 and 369,528.70 is: 554,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,831.30 : 619,246.95 = 369,528.70 : x
  2. Step 2: Convert to fraction form
    412,831.30/619,246.95 = 369,528.70/x
  3. Step 3: Cross multiply
    412,831.30x = 619,246.95 × 369,528.70
  4. Step 4: Simplify right side
    412,831.30x = 228,829,520,412.47
  5. Step 5: Solve for x
    x = 228,829,520,412.47/412,831.30
  6. Step 6: Final answer
    x = 554,293.05

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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.