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Finding the Fourth Proportional to 76,489.95, 105,558.48 and 46,280.82

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Solution

The fourth proportional to 76,489.95, 105,558.48 and 46,280.82 is: 63,868.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,489.95 : 105,558.48 = 46,280.82 : x
  2. Step 2: Convert to fraction form
    76,489.95/105,558.48 = 46,280.82/x
  3. Step 3: Cross multiply
    76,489.95x = 105,558.48 × 46,280.82
  4. Step 4: Simplify right side
    76,489.95x = 4,885,333,012.35
  5. Step 5: Solve for x
    x = 4,885,333,012.35/76,489.95
  6. Step 6: Final answer
    x = 63,868.95

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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.