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Finding the Fourth Proportional to 509,031.70, 763,353.15 and 153,927.70

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Solution

The fourth proportional to 509,031.70, 763,353.15 and 153,927.70 is: 230,832.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,031.70 : 763,353.15 = 153,927.70 : x
  2. Step 2: Convert to fraction form
    509,031.70/763,353.15 = 153,927.70/x
  3. Step 3: Cross multiply
    509,031.70x = 763,353.15 × 153,927.70
  4. Step 4: Simplify right side
    509,031.70x = 117,501,194,667.26
  5. Step 5: Solve for x
    x = 117,501,194,667.26/509,031.70
  6. Step 6: Final answer
    x = 230,832.76

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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.