Home / 85,666,914-128,452,080.60-28,143,740.16

Finding the Fourth Proportional to 85,666,914, 128,452,080.60 and 28,143,740.16

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Solution

The fourth proportional to 85,666,914, 128,452,080.60 and 28,143,740.16 is: 42,199,745.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,666,914 : 128,452,080.60 = 28,143,740.16 : x
  2. Step 2: Convert to fraction form
    85,666,914/128,452,080.60 = 28,143,740.16/x
  3. Step 3: Cross multiply
    85,666,914x = 128,452,080.60 × 28,143,740.16
  4. Step 4: Simplify right side
    85,666,914x = 3,615,121,979,417,776.50
  5. Step 5: Solve for x
    x = 3,615,121,979,417,776.50/85,666,914
  6. Step 6: Final answer
    x = 42,199,745.63

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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.