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Finding the Fourth Proportional to 93,653.64, 129,250.80 and 51,218.40

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Solution

The fourth proportional to 93,653.64, 129,250.80 and 51,218.40 is: 70,686.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,653.64 : 129,250.80 = 51,218.40 : x
  2. Step 2: Convert to fraction form
    93,653.64/129,250.80 = 51,218.40/x
  3. Step 3: Cross multiply
    93,653.64x = 129,250.80 × 51,218.40
  4. Step 4: Simplify right side
    93,653.64x = 6,620,019,174.72
  5. Step 5: Solve for x
    x = 6,620,019,174.72/93,653.64
  6. Step 6: Final answer
    x = 70,686.19

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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.