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Finding the Fourth Proportional to 76,218.80, 114,133.80 and 60,666.80

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Solution

The fourth proportional to 76,218.80, 114,133.80 and 60,666.80 is: 90,845.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,218.80 : 114,133.80 = 60,666.80 : x
  2. Step 2: Convert to fraction form
    76,218.80/114,133.80 = 60,666.80/x
  3. Step 3: Cross multiply
    76,218.80x = 114,133.80 × 60,666.80
  4. Step 4: Simplify right side
    76,218.80x = 6,924,132,417.84
  5. Step 5: Solve for x
    x = 6,924,132,417.84/76,218.80
  6. Step 6: Final answer
    x = 90,845.47

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1.5x scale

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.