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Finding the Fourth Proportional to 75,307.51, 103,839.15 and 48,047.12

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Solution

The fourth proportional to 75,307.51, 103,839.15 and 48,047.12 is: 66,250.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,307.51 : 103,839.15 = 48,047.12 : x
  2. Step 2: Convert to fraction form
    75,307.51/103,839.15 = 48,047.12/x
  3. Step 3: Cross multiply
    75,307.51x = 103,839.15 × 48,047.12
  4. Step 4: Simplify right side
    75,307.51x = 4,989,172,100.75
  5. Step 5: Solve for x
    x = 4,989,172,100.75/75,307.51
  6. Step 6: Final answer
    x = 66,250.66

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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.