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Finding the Fourth Proportional to 76,487.95, 105,555.72 and 46,278.82

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Solution

The fourth proportional to 76,487.95, 105,555.72 and 46,278.82 is: 63,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,487.95 : 105,555.72 = 46,278.82 : x
  2. Step 2: Convert to fraction form
    76,487.95/105,555.72 = 46,278.82/x
  3. Step 3: Cross multiply
    76,487.95x = 105,555.72 × 46,278.82
  4. Step 4: Simplify right side
    76,487.95x = 4,884,994,165.85
  5. Step 5: Solve for x
    x = 4,884,994,165.85/76,487.95
  6. Step 6: Final answer
    x = 63,866.19

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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.