Home / 527,877.15-791,808.30-128,518.80

Finding the Fourth Proportional to 527,877.15, 791,808.30 and 128,518.80

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Solution

The fourth proportional to 527,877.15, 791,808.30 and 128,518.80 is: 192,776.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,877.15 : 791,808.30 = 128,518.80 : x
  2. Step 2: Convert to fraction form
    527,877.15/791,808.30 = 128,518.80/x
  3. Step 3: Cross multiply
    527,877.15x = 791,808.30 × 128,518.80
  4. Step 4: Simplify right side
    527,877.15x = 101,762,252,546.04
  5. Step 5: Solve for x
    x = 101,762,252,546.04/527,877.15
  6. Step 6: Final answer
    x = 192,776.39

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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.