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Finding the Fourth Proportional to 407,660.04, 611,490.06 and 127,199.16

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Solution

The fourth proportional to 407,660.04, 611,490.06 and 127,199.16 is: 190,798.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,660.04 : 611,490.06 = 127,199.16 : x
  2. Step 2: Convert to fraction form
    407,660.04/611,490.06 = 127,199.16/x
  3. Step 3: Cross multiply
    407,660.04x = 611,490.06 × 127,199.16
  4. Step 4: Simplify right side
    407,660.04x = 77,781,021,980.35
  5. Step 5: Solve for x
    x = 77,781,021,980.35/407,660.04
  6. Step 6: Final answer
    x = 190,798.74

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Similar ratio
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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.