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Finding the Fourth Proportional to 370,015.76, 555,011.40 and 156,726.68

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Solution

The fourth proportional to 370,015.76, 555,011.40 and 156,726.68 is: 235,084.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,015.76 : 555,011.40 = 156,726.68 : x
  2. Step 2: Convert to fraction form
    370,015.76/555,011.40 = 156,726.68/x
  3. Step 3: Cross multiply
    370,015.76x = 555,011.40 × 156,726.68
  4. Step 4: Simplify right side
    370,015.76x = 86,985,094,084.15
  5. Step 5: Solve for x
    x = 86,985,094,084.15/370,015.76
  6. Step 6: Final answer
    x = 235,084.84

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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.