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Finding the Fourth Proportional to 152,436.80, 228,655.20 and 47,266.40

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Solution

The fourth proportional to 152,436.80, 228,655.20 and 47,266.40 is: 70,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,436.80 : 228,655.20 = 47,266.40 : x
  2. Step 2: Convert to fraction form
    152,436.80/228,655.20 = 47,266.40/x
  3. Step 3: Cross multiply
    152,436.80x = 228,655.20 × 47,266.40
  4. Step 4: Simplify right side
    152,436.80x = 10,807,708,145.28
  5. Step 5: Solve for x
    x = 10,807,708,145.28/152,436.80
  6. Step 6: Final answer
    x = 70,899.60

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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.