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Finding the Fourth Proportional to 58,858.40, 88,330.80 and 39,130.40

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Solution

The fourth proportional to 58,858.40, 88,330.80 and 39,130.40 is: 58,724.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,858.40 : 88,330.80 = 39,130.40 : x
  2. Step 2: Convert to fraction form
    58,858.40/88,330.80 = 39,130.40/x
  3. Step 3: Cross multiply
    58,858.40x = 88,330.80 × 39,130.40
  4. Step 4: Simplify right side
    58,858.40x = 3,456,419,536.32
  5. Step 5: Solve for x
    x = 3,456,419,536.32/58,858.40
  6. Step 6: Final answer
    x = 58,724.32

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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.