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Finding the Fourth Proportional to 520,056.70, 730,178.90 and 520,056.70

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Solution

The fourth proportional to 520,056.70, 730,178.90 and 520,056.70 is: 730,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,056.70 : 730,178.90 = 520,056.70 : x
  2. Step 2: Convert to fraction form
    520,056.70/730,178.90 = 520,056.70/x
  3. Step 3: Cross multiply
    520,056.70x = 730,178.90 × 520,056.70
  4. Step 4: Simplify right side
    520,056.70x = 379,734,429,143.63
  5. Step 5: Solve for x
    x = 379,734,429,143.63/520,056.70
  6. Step 6: Final answer
    x = 730,178.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.