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Finding the Fourth Proportional to 61,113.60, 91,670.40 and 26,056.80

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Solution

The fourth proportional to 61,113.60, 91,670.40 and 26,056.80 is: 39,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,113.60 : 91,670.40 = 26,056.80 : x
  2. Step 2: Convert to fraction form
    61,113.60/91,670.40 = 26,056.80/x
  3. Step 3: Cross multiply
    61,113.60x = 91,670.40 × 26,056.80
  4. Step 4: Simplify right side
    61,113.60x = 2,388,637,278.72
  5. Step 5: Solve for x
    x = 2,388,637,278.72/61,113.60
  6. Step 6: Final answer
    x = 39,085.20

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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.