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Finding the Fourth Proportional to 615,980.16, 850,066.56 and 361,514.88

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Solution

The fourth proportional to 615,980.16, 850,066.56 and 361,514.88 is: 498,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,980.16 : 850,066.56 = 361,514.88 : x
  2. Step 2: Convert to fraction form
    615,980.16/850,066.56 = 361,514.88/x
  3. Step 3: Cross multiply
    615,980.16x = 850,066.56 × 361,514.88
  4. Step 4: Simplify right side
    615,980.16x = 307,311,710,430.41
  5. Step 5: Solve for x
    x = 307,311,710,430.41/615,980.16
  6. Step 6: Final answer
    x = 498,898.72

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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.