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Finding the Fourth Proportional to 98,992.80, 148,489.16 and 46,438.32

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Solution

The fourth proportional to 98,992.80, 148,489.16 and 46,438.32 is: 69,657.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,992.80 : 148,489.16 = 46,438.32 : x
  2. Step 2: Convert to fraction form
    98,992.80/148,489.16 = 46,438.32/x
  3. Step 3: Cross multiply
    98,992.80x = 148,489.16 × 46,438.32
  4. Step 4: Simplify right side
    98,992.80x = 6,895,587,128.61
  5. Step 5: Solve for x
    x = 6,895,587,128.61/98,992.80
  6. Step 6: Final answer
    x = 69,657.46

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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.