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Finding the Fourth Proportional to 101,816.39, 140,504.47 and 56,493.40

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Solution

The fourth proportional to 101,816.39, 140,504.47 and 56,493.40 is: 77,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,816.39 : 140,504.47 = 56,493.40 : x
  2. Step 2: Convert to fraction form
    101,816.39/140,504.47 = 56,493.40/x
  3. Step 3: Cross multiply
    101,816.39x = 140,504.47 × 56,493.40
  4. Step 4: Simplify right side
    101,816.39x = 7,937,575,225.50
  5. Step 5: Solve for x
    x = 7,937,575,225.50/101,816.39
  6. Step 6: Final answer
    x = 77,959.70

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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.