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Finding the Fourth Proportional to 93,646.80, 129,218.48 and 52,809.12

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Solution

The fourth proportional to 93,646.80, 129,218.48 and 52,809.12 is: 72,868.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,646.80 : 129,218.48 = 52,809.12 : x
  2. Step 2: Convert to fraction form
    93,646.80/129,218.48 = 52,809.12/x
  3. Step 3: Cross multiply
    93,646.80x = 129,218.48 × 52,809.12
  4. Step 4: Simplify right side
    93,646.80x = 6,823,914,216.54
  5. Step 5: Solve for x
    x = 6,823,914,216.54/93,646.80
  6. Step 6: Final answer
    x = 72,868.63

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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.