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Finding the Fourth Proportional to 92,362.08, 138,557.70 and 30,018

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Solution

The fourth proportional to 92,362.08, 138,557.70 and 30,018 is: 45,031.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,362.08 : 138,557.70 = 30,018 : x
  2. Step 2: Convert to fraction form
    92,362.08/138,557.70 = 30,018/x
  3. Step 3: Cross multiply
    92,362.08x = 138,557.70 × 30,018
  4. Step 4: Simplify right side
    92,362.08x = 4,159,225,038.60
  5. Step 5: Solve for x
    x = 4,159,225,038.60/92,362.08
  6. Step 6: Final answer
    x = 45,031.74

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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.