Home / 85,800,669.20-128,701,003.80-51,363,292.40

Finding the Fourth Proportional to 85,800,669.20, 128,701,003.80 and 51,363,292.40

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Solution

The fourth proportional to 85,800,669.20, 128,701,003.80 and 51,363,292.40 is: 77,044,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,800,669.20 : 128,701,003.80 = 51,363,292.40 : x
  2. Step 2: Convert to fraction form
    85,800,669.20/128,701,003.80 = 51,363,292.40/x
  3. Step 3: Cross multiply
    85,800,669.20x = 128,701,003.80 × 51,363,292.40
  4. Step 4: Simplify right side
    85,800,669.20x = 6,610,507,290,352,911
  5. Step 5: Solve for x
    x = 6,610,507,290,352,911/85,800,669.20
  6. Step 6: Final answer
    x = 77,044,938.60

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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.