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Finding the Fourth Proportional to 118,681.70, 163,776.66 and 67,710.94

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Solution

The fourth proportional to 118,681.70, 163,776.66 and 67,710.94 is: 93,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,681.70 : 163,776.66 = 67,710.94 : x
  2. Step 2: Convert to fraction form
    118,681.70/163,776.66 = 67,710.94/x
  3. Step 3: Cross multiply
    118,681.70x = 163,776.66 × 67,710.94
  4. Step 4: Simplify right side
    118,681.70x = 11,089,471,598.66
  5. Step 5: Solve for x
    x = 11,089,471,598.66/118,681.70
  6. Step 6: Final answer
    x = 93,438.77

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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.