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Finding the Fourth Proportional to 53,980.51, 80,969.55 and 24,390.40

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Solution

The fourth proportional to 53,980.51, 80,969.55 and 24,390.40 is: 36,585.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,980.51 : 80,969.55 = 24,390.40 : x
  2. Step 2: Convert to fraction form
    53,980.51/80,969.55 = 24,390.40/x
  3. Step 3: Cross multiply
    53,980.51x = 80,969.55 × 24,390.40
  4. Step 4: Simplify right side
    53,980.51x = 1,974,879,712.32
  5. Step 5: Solve for x
    x = 1,974,879,712.32/53,980.51
  6. Step 6: Final answer
    x = 36,585.05

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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.