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Finding the Fourth Proportional to 638,783.70, 958,175.55 and 524,622.30

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Solution

The fourth proportional to 638,783.70, 958,175.55 and 524,622.30 is: 786,933.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,783.70 : 958,175.55 = 524,622.30 : x
  2. Step 2: Convert to fraction form
    638,783.70/958,175.55 = 524,622.30/x
  3. Step 3: Cross multiply
    638,783.70x = 958,175.55 × 524,622.30
  4. Step 4: Simplify right side
    638,783.70x = 502,680,260,844.77
  5. Step 5: Solve for x
    x = 502,680,260,844.77/638,783.70
  6. Step 6: Final answer
    x = 786,933.45

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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.