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Finding the Fourth Proportional to 108,643.36, 149,925.76 and 60,900.80

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Solution

The fourth proportional to 108,643.36, 149,925.76 and 60,900.80 is: 84,041.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,643.36 : 149,925.76 = 60,900.80 : x
  2. Step 2: Convert to fraction form
    108,643.36/149,925.76 = 60,900.80/x
  3. Step 3: Cross multiply
    108,643.36x = 149,925.76 × 60,900.80
  4. Step 4: Simplify right side
    108,643.36x = 9,130,598,724.61
  5. Step 5: Solve for x
    x = 9,130,598,724.61/108,643.36
  6. Step 6: Final answer
    x = 84,041.94

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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.