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Finding the Fourth Proportional to 58,709.65, 88,041.92 and 21,258.64

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Solution

The fourth proportional to 58,709.65, 88,041.92 and 21,258.64 is: 31,879.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,709.65 : 88,041.92 = 21,258.64 : x
  2. Step 2: Convert to fraction form
    58,709.65/88,041.92 = 21,258.64/x
  3. Step 3: Cross multiply
    58,709.65x = 88,041.92 × 21,258.64
  4. Step 4: Simplify right side
    58,709.65x = 1,871,651,482.19
  5. Step 5: Solve for x
    x = 1,871,651,482.19/58,709.65
  6. Step 6: Final answer
    x = 31,879.79

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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.