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Finding the Fourth Proportional to 637,615.56, 879,909.66 and 351,134.76

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Solution

The fourth proportional to 637,615.56, 879,909.66 and 351,134.76 is: 484,566.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,615.56 : 879,909.66 = 351,134.76 : x
  2. Step 2: Convert to fraction form
    637,615.56/879,909.66 = 351,134.76/x
  3. Step 3: Cross multiply
    637,615.56x = 879,909.66 × 351,134.76
  4. Step 4: Simplify right side
    637,615.56x = 308,966,867,285.78
  5. Step 5: Solve for x
    x = 308,966,867,285.78/637,615.56
  6. Step 6: Final answer
    x = 484,566.07

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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.