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Finding the Fourth Proportional to 210,015.90, 314,586.45 and 210,015.90

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Solution

The fourth proportional to 210,015.90, 314,586.45 and 210,015.90 is: 314,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,015.90 : 314,586.45 = 210,015.90 : x
  2. Step 2: Convert to fraction form
    210,015.90/314,586.45 = 210,015.90/x
  3. Step 3: Cross multiply
    210,015.90x = 314,586.45 × 210,015.90
  4. Step 4: Simplify right side
    210,015.90x = 66,068,156,424.56
  5. Step 5: Solve for x
    x = 66,068,156,424.56/210,015.90
  6. Step 6: Final answer
    x = 314,586.45

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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.