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Finding the Fourth Proportional to 440,459.78, 607,824.31 and 256,686.65

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Solution

The fourth proportional to 440,459.78, 607,824.31 and 256,686.65 is: 354,221.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,459.78 : 607,824.31 = 256,686.65 : x
  2. Step 2: Convert to fraction form
    440,459.78/607,824.31 = 256,686.65/x
  3. Step 3: Cross multiply
    440,459.78x = 607,824.31 × 256,686.65
  4. Step 4: Simplify right side
    440,459.78x = 156,020,385,922.46
  5. Step 5: Solve for x
    x = 156,020,385,922.46/440,459.78
  6. Step 6: Final answer
    x = 354,221.64

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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.