Home / 85,680,592.80-128,537,180-28,189,436.64

Finding the Fourth Proportional to 85,680,592.80, 128,537,180 and 28,189,436.64

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Solution

The fourth proportional to 85,680,592.80, 128,537,180 and 28,189,436.64 is: 42,289,514.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,680,592.80 : 128,537,180 = 28,189,436.64 : x
  2. Step 2: Convert to fraction form
    85,680,592.80/128,537,180 = 28,189,436.64/x
  3. Step 3: Cross multiply
    85,680,592.80x = 128,537,180 × 28,189,436.64
  4. Step 4: Simplify right side
    85,680,592.80x = 3,623,390,691,494,275.50
  5. Step 5: Solve for x
    x = 3,623,390,691,494,275.50/85,680,592.80
  6. Step 6: Final answer
    x = 42,289,514.73

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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.