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Finding the Fourth Proportional to 118,396, 177,681.66 and 56,066.68

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Solution

The fourth proportional to 118,396, 177,681.66 and 56,066.68 is: 84,141.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,396 : 177,681.66 = 56,066.68 : x
  2. Step 2: Convert to fraction form
    118,396/177,681.66 = 56,066.68/x
  3. Step 3: Cross multiply
    118,396x = 177,681.66 × 56,066.68
  4. Step 4: Simplify right side
    118,396x = 9,962,020,773.09
  5. Step 5: Solve for x
    x = 9,962,020,773.09/118,396
  6. Step 6: Final answer
    x = 84,141.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.