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Finding the Fourth Proportional to 71,055.58, 106,386.45 and 35,921.80

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Solution

The fourth proportional to 71,055.58, 106,386.45 and 35,921.80 is: 53,783.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,055.58 : 106,386.45 = 35,921.80 : x
  2. Step 2: Convert to fraction form
    71,055.58/106,386.45 = 35,921.80/x
  3. Step 3: Cross multiply
    71,055.58x = 106,386.45 × 35,921.80
  4. Step 4: Simplify right side
    71,055.58x = 3,821,592,779.61
  5. Step 5: Solve for x
    x = 3,821,592,779.61/71,055.58
  6. Step 6: Final answer
    x = 53,783.15

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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.