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Finding the Fourth Proportional to 628,038.24, 866,709.12 and 341,575.20

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Solution

The fourth proportional to 628,038.24, 866,709.12 and 341,575.20 is: 471,382.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,038.24 : 866,709.12 = 341,575.20 : x
  2. Step 2: Convert to fraction form
    628,038.24/866,709.12 = 341,575.20/x
  3. Step 3: Cross multiply
    628,038.24x = 866,709.12 × 341,575.20
  4. Step 4: Simplify right side
    628,038.24x = 296,046,341,005.82
  5. Step 5: Solve for x
    x = 296,046,341,005.82/628,038.24
  6. Step 6: Final answer
    x = 471,382.67

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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.