Home / 61,280.16-91,920.32-19,160.47

Finding the Fourth Proportional to 61,280.16, 91,920.32 and 19,160.47

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Solution

The fourth proportional to 61,280.16, 91,920.32 and 19,160.47 is: 28,740.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,280.16 : 91,920.32 = 19,160.47 : x
  2. Step 2: Convert to fraction form
    61,280.16/91,920.32 = 19,160.47/x
  3. Step 3: Cross multiply
    61,280.16x = 91,920.32 × 19,160.47
  4. Step 4: Simplify right side
    61,280.16x = 1,761,236,533.75
  5. Step 5: Solve for x
    x = 1,761,236,533.75/61,280.16
  6. Step 6: Final answer
    x = 28,740.73

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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.