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Finding the Fourth Proportional to 70,935.60, 97,809.84 and 53,000.40

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Solution

The fourth proportional to 70,935.60, 97,809.84 and 53,000.40 is: 73,079.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,935.60 : 97,809.84 = 53,000.40 : x
  2. Step 2: Convert to fraction form
    70,935.60/97,809.84 = 53,000.40/x
  3. Step 3: Cross multiply
    70,935.60x = 97,809.84 × 53,000.40
  4. Step 4: Simplify right side
    70,935.60x = 5,183,960,643.94
  5. Step 5: Solve for x
    x = 5,183,960,643.94/70,935.60
  6. Step 6: Final answer
    x = 73,079.82

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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.