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Finding the Fourth Proportional to 409,187.60, 615,093.60 and 291,672.80

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Solution

The fourth proportional to 409,187.60, 615,093.60 and 291,672.80 is: 438,444.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,187.60 : 615,093.60 = 291,672.80 : x
  2. Step 2: Convert to fraction form
    409,187.60/615,093.60 = 291,672.80/x
  3. Step 3: Cross multiply
    409,187.60x = 615,093.60 × 291,672.80
  4. Step 4: Simplify right side
    409,187.60x = 179,406,072,574.08
  5. Step 5: Solve for x
    x = 179,406,072,574.08/409,187.60
  6. Step 6: Final answer
    x = 438,444.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.