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Finding the Fourth Proportional to 55,720.70, 83,483.99 and 46,420.47

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Solution

The fourth proportional to 55,720.70, 83,483.99 and 46,420.47 is: 69,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,720.70 : 83,483.99 = 46,420.47 : x
  2. Step 2: Convert to fraction form
    55,720.70/83,483.99 = 46,420.47/x
  3. Step 3: Cross multiply
    55,720.70x = 83,483.99 × 46,420.47
  4. Step 4: Simplify right side
    55,720.70x = 3,875,365,821.17
  5. Step 5: Solve for x
    x = 3,875,365,821.17/55,720.70
  6. Step 6: Final answer
    x = 69,549.85

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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.