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Finding the Fourth Proportional to 516,007.68, 712,090.08 and 289,653.60

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Solution

The fourth proportional to 516,007.68, 712,090.08 and 289,653.60 is: 399,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,007.68 : 712,090.08 = 289,653.60 : x
  2. Step 2: Convert to fraction form
    516,007.68/712,090.08 = 289,653.60/x
  3. Step 3: Cross multiply
    516,007.68x = 712,090.08 × 289,653.60
  4. Step 4: Simplify right side
    516,007.68x = 206,259,455,196.29
  5. Step 5: Solve for x
    x = 206,259,455,196.29/516,007.68
  6. Step 6: Final answer
    x = 399,721.68

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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.