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Finding the Fourth Proportional to 92,876.32, 128,156.88 and 59,318.56

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Solution

The fourth proportional to 92,876.32, 128,156.88 and 59,318.56 is: 81,851.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,876.32 : 128,156.88 = 59,318.56 : x
  2. Step 2: Convert to fraction form
    92,876.32/128,156.88 = 59,318.56/x
  3. Step 3: Cross multiply
    92,876.32x = 128,156.88 × 59,318.56
  4. Step 4: Simplify right side
    92,876.32x = 7,602,081,575.69
  5. Step 5: Solve for x
    x = 7,602,081,575.69/92,876.32
  6. Step 6: Final answer
    x = 81,851.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.