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Finding the Fourth Proportional to 82,703.40, 124,055.10 and 26,543.40

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Solution

The fourth proportional to 82,703.40, 124,055.10 and 26,543.40 is: 39,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,703.40 : 124,055.10 = 26,543.40 : x
  2. Step 2: Convert to fraction form
    82,703.40/124,055.10 = 26,543.40/x
  3. Step 3: Cross multiply
    82,703.40x = 124,055.10 × 26,543.40
  4. Step 4: Simplify right side
    82,703.40x = 3,292,844,141.34
  5. Step 5: Solve for x
    x = 3,292,844,141.34/82,703.40
  6. Step 6: Final answer
    x = 39,815.10

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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.