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Finding the Fourth Proportional to 75,350.88, 113,030.64 and 28,602.72

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Solution

The fourth proportional to 75,350.88, 113,030.64 and 28,602.72 is: 42,905.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,350.88 : 113,030.64 = 28,602.72 : x
  2. Step 2: Convert to fraction form
    75,350.88/113,030.64 = 28,602.72/x
  3. Step 3: Cross multiply
    75,350.88x = 113,030.64 × 28,602.72
  4. Step 4: Simplify right side
    75,350.88x = 3,232,983,747.34
  5. Step 5: Solve for x
    x = 3,232,983,747.34/75,350.88
  6. Step 6: Final answer
    x = 42,905.72

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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.