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Finding the Fourth Proportional to 77,893.55, 107,492.96 and 42,083.45

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Solution

The fourth proportional to 77,893.55, 107,492.96 and 42,083.45 is: 58,075.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,893.55 : 107,492.96 = 42,083.45 : x
  2. Step 2: Convert to fraction form
    77,893.55/107,492.96 = 42,083.45/x
  3. Step 3: Cross multiply
    77,893.55x = 107,492.96 × 42,083.45
  4. Step 4: Simplify right side
    77,893.55x = 4,523,673,859.63
  5. Step 5: Solve for x
    x = 4,523,673,859.63/77,893.55
  6. Step 6: Final answer
    x = 58,075.08

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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.