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Finding the Fourth Proportional to 527,457.51, 728,856.90 and 383,968.44

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Solution

The fourth proportional to 527,457.51, 728,856.90 and 383,968.44 is: 530,579.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,457.51 : 728,856.90 = 383,968.44 : x
  2. Step 2: Convert to fraction form
    527,457.51/728,856.90 = 383,968.44/x
  3. Step 3: Cross multiply
    527,457.51x = 728,856.90 × 383,968.44
  4. Step 4: Simplify right side
    527,457.51x = 279,858,046,876.24
  5. Step 5: Solve for x
    x = 279,858,046,876.24/527,457.51
  6. Step 6: Final answer
    x = 530,579.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.