Home / 85,556,143.30-128,277,536.55-47,236,015.30

Finding the Fourth Proportional to 85,556,143.30, 128,277,536.55 and 47,236,015.30

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Solution

The fourth proportional to 85,556,143.30, 128,277,536.55 and 47,236,015.30 is: 70,822,730.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,556,143.30 : 128,277,536.55 = 47,236,015.30 : x
  2. Step 2: Convert to fraction form
    85,556,143.30/128,277,536.55 = 47,236,015.30/x
  3. Step 3: Cross multiply
    85,556,143.30x = 128,277,536.55 × 47,236,015.30
  4. Step 4: Simplify right side
    85,556,143.30x = 6,059,319,679,122,109
  5. Step 5: Solve for x
    x = 6,059,319,679,122,109/85,556,143.30
  6. Step 6: Final answer
    x = 70,822,730.49

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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.