Home / 85,603,560-128,378,367-28,082,427.36

Finding the Fourth Proportional to 85,603,560, 128,378,367 and 28,082,427.36

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Solution

The fourth proportional to 85,603,560, 128,378,367 and 28,082,427.36 is: 42,114,792.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603,560 : 128,378,367 = 28,082,427.36 : x
  2. Step 2: Convert to fraction form
    85,603,560/128,378,367 = 28,082,427.36/x
  3. Step 3: Cross multiply
    85,603,560x = 128,378,367 × 28,082,427.36
  4. Step 4: Simplify right side
    85,603,560x = 3,605,176,165,872,921
  5. Step 5: Solve for x
    x = 3,605,176,165,872,921/85,603,560
  6. Step 6: Final answer
    x = 42,114,792.49

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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.