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Finding the Fourth Proportional to 55,509.90, 76,596.80 and 35,358.51

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Solution

The fourth proportional to 55,509.90, 76,596.80 and 35,358.51 is: 48,790.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,509.90 : 76,596.80 = 35,358.51 : x
  2. Step 2: Convert to fraction form
    55,509.90/76,596.80 = 35,358.51/x
  3. Step 3: Cross multiply
    55,509.90x = 76,596.80 × 35,358.51
  4. Step 4: Simplify right side
    55,509.90x = 2,708,348,718.77
  5. Step 5: Solve for x
    x = 2,708,348,718.77/55,509.90
  6. Step 6: Final answer
    x = 48,790.37

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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.