Home / 85,654,893.40-128,525,885.70-56,921,018.20

Finding the Fourth Proportional to 85,654,893.40, 128,525,885.70 and 56,921,018.20

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Solution

The fourth proportional to 85,654,893.40, 128,525,885.70 and 56,921,018.20 is: 85,410,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,654,893.40 : 128,525,885.70 = 56,921,018.20 : x
  2. Step 2: Convert to fraction form
    85,654,893.40/128,525,885.70 = 56,921,018.20/x
  3. Step 3: Cross multiply
    85,654,893.40x = 128,525,885.70 × 56,921,018.20
  4. Step 4: Simplify right side
    85,654,893.40x = 7,315,824,279,100,820
  5. Step 5: Solve for x
    x = 7,315,824,279,100,820/85,654,893.40
  6. Step 6: Final answer
    x = 85,410,465.05

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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.