Home / 85,536,559.90-128,304,839.85-84,780,732.70

Finding the Fourth Proportional to 85,536,559.90, 128,304,839.85 and 84,780,732.70

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Solution

The fourth proportional to 85,536,559.90, 128,304,839.85 and 84,780,732.70 is: 127,171,099.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,559.90 : 128,304,839.85 = 84,780,732.70 : x
  2. Step 2: Convert to fraction form
    85,536,559.90/128,304,839.85 = 84,780,732.70/x
  3. Step 3: Cross multiply
    85,536,559.90x = 128,304,839.85 × 84,780,732.70
  4. Step 4: Simplify right side
    85,536,559.90x = 10,877,778,331,439,158
  5. Step 5: Solve for x
    x = 10,877,778,331,439,158/85,536,559.90
  6. Step 6: Final answer
    x = 127,171,099.05

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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.