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Finding the Fourth Proportional to 93,685.95, 129,287.61 and 51,243.57

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Solution

The fourth proportional to 93,685.95, 129,287.61 and 51,243.57 is: 70,716.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,685.95 : 129,287.61 = 51,243.57 : x
  2. Step 2: Convert to fraction form
    93,685.95/129,287.61 = 51,243.57/x
  3. Step 3: Cross multiply
    93,685.95x = 129,287.61 × 51,243.57
  4. Step 4: Simplify right side
    93,685.95x = 6,625,158,693.17
  5. Step 5: Solve for x
    x = 6,625,158,693.17/93,685.95
  6. Step 6: Final answer
    x = 70,716.67

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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.