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Finding the Fourth Proportional to 105,445.53, 145,511.37 and 57,695.67

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Solution

The fourth proportional to 105,445.53, 145,511.37 and 57,695.67 is: 79,618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,445.53 : 145,511.37 = 57,695.67 : x
  2. Step 2: Convert to fraction form
    105,445.53/145,511.37 = 57,695.67/x
  3. Step 3: Cross multiply
    105,445.53x = 145,511.37 × 57,695.67
  4. Step 4: Simplify right side
    105,445.53x = 8,395,375,984.77
  5. Step 5: Solve for x
    x = 8,395,375,984.77/105,445.53
  6. Step 6: Final answer
    x = 79,618.13

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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.