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Finding the Fourth Proportional to 77,404.01, 106,818.75 and 43,420.05

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Solution

The fourth proportional to 77,404.01, 106,818.75 and 43,420.05 is: 59,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,404.01 : 106,818.75 = 43,420.05 : x
  2. Step 2: Convert to fraction form
    77,404.01/106,818.75 = 43,420.05/x
  3. Step 3: Cross multiply
    77,404.01x = 106,818.75 × 43,420.05
  4. Step 4: Simplify right side
    77,404.01x = 4,638,075,465.94
  5. Step 5: Solve for x
    x = 4,638,075,465.94/77,404.01
  6. Step 6: Final answer
    x = 59,920.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.