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Finding the Fourth Proportional to 70,509.92, 97,303.84 and 38,679.08

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Solution

The fourth proportional to 70,509.92, 97,303.84 and 38,679.08 is: 53,377.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,509.92 : 97,303.84 = 38,679.08 : x
  2. Step 2: Convert to fraction form
    70,509.92/97,303.84 = 38,679.08/x
  3. Step 3: Cross multiply
    70,509.92x = 97,303.84 × 38,679.08
  4. Step 4: Simplify right side
    70,509.92x = 3,763,623,011.67
  5. Step 5: Solve for x
    x = 3,763,623,011.67/70,509.92
  6. Step 6: Final answer
    x = 53,377.21

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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.