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Finding the Fourth Proportional to 92,573.25, 138,622.70 and 64,070.72

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Solution

The fourth proportional to 92,573.25, 138,622.70 and 64,070.72 is: 95,941.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,573.25 : 138,622.70 = 64,070.72 : x
  2. Step 2: Convert to fraction form
    92,573.25/138,622.70 = 64,070.72/x
  3. Step 3: Cross multiply
    92,573.25x = 138,622.70 × 64,070.72
  4. Step 4: Simplify right side
    92,573.25x = 8,881,655,823.84
  5. Step 5: Solve for x
    x = 8,881,655,823.84/92,573.25
  6. Step 6: Final answer
    x = 95,941.92

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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.