Home / 85,536,008.40-128,304,012.60-76,876,654.80

Finding the Fourth Proportional to 85,536,008.40, 128,304,012.60 and 76,876,654.80

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Solution

The fourth proportional to 85,536,008.40, 128,304,012.60 and 76,876,654.80 is: 115,314,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,008.40 : 128,304,012.60 = 76,876,654.80 : x
  2. Step 2: Convert to fraction form
    85,536,008.40/128,304,012.60 = 76,876,654.80/x
  3. Step 3: Cross multiply
    85,536,008.40x = 128,304,012.60 × 76,876,654.80
  4. Step 4: Simplify right side
    85,536,008.40x = 9,863,583,286,105,050
  5. Step 5: Solve for x
    x = 9,863,583,286,105,050/85,536,008.40
  6. Step 6: Final answer
    x = 115,314,982.20

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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.