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Finding the Fourth Proportional to 40,590.51, 55,978.63 and 25,484.58

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Solution

The fourth proportional to 40,590.51, 55,978.63 and 25,484.58 is: 35,145.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,590.51 : 55,978.63 = 25,484.58 : x
  2. Step 2: Convert to fraction form
    40,590.51/55,978.63 = 25,484.58/x
  3. Step 3: Cross multiply
    40,590.51x = 55,978.63 × 25,484.58
  4. Step 4: Simplify right side
    40,590.51x = 1,426,591,810.81
  5. Step 5: Solve for x
    x = 1,426,591,810.81/40,590.51
  6. Step 6: Final answer
    x = 35,145.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.