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Finding the Fourth Proportional to 94,885.88, 130,920.94 and 56,657.80

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Solution

The fourth proportional to 94,885.88, 130,920.94 and 56,657.80 is: 78,174.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,885.88 : 130,920.94 = 56,657.80 : x
  2. Step 2: Convert to fraction form
    94,885.88/130,920.94 = 56,657.80/x
  3. Step 3: Cross multiply
    94,885.88x = 130,920.94 × 56,657.80
  4. Step 4: Simplify right side
    94,885.88x = 7,417,692,434.33
  5. Step 5: Solve for x
    x = 7,417,692,434.33/94,885.88
  6. Step 6: Final answer
    x = 78,174.88

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1.5x scale

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.