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Finding the Fourth Proportional to 76,703.40, 105,848.04 and 43,162.92

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Solution

The fourth proportional to 76,703.40, 105,848.04 and 43,162.92 is: 59,563.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,703.40 : 105,848.04 = 43,162.92 : x
  2. Step 2: Convert to fraction form
    76,703.40/105,848.04 = 43,162.92/x
  3. Step 3: Cross multiply
    76,703.40x = 105,848.04 × 43,162.92
  4. Step 4: Simplify right side
    76,703.40x = 4,568,710,482.68
  5. Step 5: Solve for x
    x = 4,568,710,482.68/76,703.40
  6. Step 6: Final answer
    x = 59,563.34

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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.