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Finding the Fourth Proportional to 58,813.80, 88,220.70 and 57,647.40

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Solution

The fourth proportional to 58,813.80, 88,220.70 and 57,647.40 is: 86,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,813.80 : 88,220.70 = 57,647.40 : x
  2. Step 2: Convert to fraction form
    58,813.80/88,220.70 = 57,647.40/x
  3. Step 3: Cross multiply
    58,813.80x = 88,220.70 × 57,647.40
  4. Step 4: Simplify right side
    58,813.80x = 5,085,693,981.18
  5. Step 5: Solve for x
    x = 5,085,693,981.18/58,813.80
  6. Step 6: Final answer
    x = 86,471.10

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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.