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Finding the Fourth Proportional to 99,674.40, 149,554.80 and 47,056.80

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Solution

The fourth proportional to 99,674.40, 149,554.80 and 47,056.80 is: 70,605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,674.40 : 149,554.80 = 47,056.80 : x
  2. Step 2: Convert to fraction form
    99,674.40/149,554.80 = 47,056.80/x
  3. Step 3: Cross multiply
    99,674.40x = 149,554.80 × 47,056.80
  4. Step 4: Simplify right side
    99,674.40x = 7,037,570,312.64
  5. Step 5: Solve for x
    x = 7,037,570,312.64/99,674.40
  6. Step 6: Final answer
    x = 70,605.59

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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.