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Finding the Fourth Proportional to 291,969.12, 437,952.72 and 70,353.12

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Solution

The fourth proportional to 291,969.12, 437,952.72 and 70,353.12 is: 105,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,969.12 : 437,952.72 = 70,353.12 : x
  2. Step 2: Convert to fraction form
    291,969.12/437,952.72 = 70,353.12/x
  3. Step 3: Cross multiply
    291,969.12x = 437,952.72 × 70,353.12
  4. Step 4: Simplify right side
    291,969.12x = 30,811,340,264.49
  5. Step 5: Solve for x
    x = 30,811,340,264.49/291,969.12
  6. Step 6: Final answer
    x = 105,529.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.