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Finding the Fourth Proportional to 76,590.54, 105,693.93 and 43,056.54

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Solution

The fourth proportional to 76,590.54, 105,693.93 and 43,056.54 is: 59,417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,590.54 : 105,693.93 = 43,056.54 : x
  2. Step 2: Convert to fraction form
    76,590.54/105,693.93 = 43,056.54/x
  3. Step 3: Cross multiply
    76,590.54x = 105,693.93 × 43,056.54
  4. Step 4: Simplify right side
    76,590.54x = 4,550,814,924.80
  5. Step 5: Solve for x
    x = 4,550,814,924.80/76,590.54
  6. Step 6: Final answer
    x = 59,417.45

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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.