Home / 85,784,102.10-128,694,815.55-28,266,585.30

Finding the Fourth Proportional to 85,784,102.10, 128,694,815.55 and 28,266,585.30

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Solution

The fourth proportional to 85,784,102.10, 128,694,815.55 and 28,266,585.30 is: 42,406,027.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,784,102.10 : 128,694,815.55 = 28,266,585.30 : x
  2. Step 2: Convert to fraction form
    85,784,102.10/128,694,815.55 = 28,266,585.30/x
  3. Step 3: Cross multiply
    85,784,102.10x = 128,694,815.55 × 28,266,585.30
  4. Step 4: Simplify right side
    85,784,102.10x = 3,637,762,981,411,841.50
  5. Step 5: Solve for x
    x = 3,637,762,981,411,841.50/85,784,102.10
  6. Step 6: Final answer
    x = 42,406,027.37

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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.