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Finding the Fourth Proportional to 370,628.61, 555,987.90 and 104,389.12

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Solution

The fourth proportional to 370,628.61, 555,987.90 and 104,389.12 is: 156,596.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,628.61 : 555,987.90 = 104,389.12 : x
  2. Step 2: Convert to fraction form
    370,628.61/555,987.90 = 104,389.12/x
  3. Step 3: Cross multiply
    370,628.61x = 555,987.90 × 104,389.12
  4. Step 4: Simplify right side
    370,628.61x = 58,039,087,089.70
  5. Step 5: Solve for x
    x = 58,039,087,089.70/370,628.61
  6. Step 6: Final answer
    x = 156,596.35

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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.