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Finding the Fourth Proportional to 615,965.60, 850,030.80 and 347,693.60

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Solution

The fourth proportional to 615,965.60, 850,030.80 and 347,693.60 is: 479,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,965.60 : 850,030.80 = 347,693.60 : x
  2. Step 2: Convert to fraction form
    615,965.60/850,030.80 = 347,693.60/x
  3. Step 3: Cross multiply
    615,965.60x = 850,030.80 × 347,693.60
  4. Step 4: Simplify right side
    615,965.60x = 295,550,268,962.88
  5. Step 5: Solve for x
    x = 295,550,268,962.88/615,965.60
  6. Step 6: Final answer
    x = 479,816.19

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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.