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Finding the Fourth Proportional to 411,116.15, 616,740.71 and 126,740.16

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Solution

The fourth proportional to 411,116.15, 616,740.71 and 126,740.16 is: 190,130.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,116.15 : 616,740.71 = 126,740.16 : x
  2. Step 2: Convert to fraction form
    411,116.15/616,740.71 = 126,740.16/x
  3. Step 3: Cross multiply
    411,116.15x = 616,740.71 × 126,740.16
  4. Step 4: Simplify right side
    411,116.15x = 78,165,816,263.91
  5. Step 5: Solve for x
    x = 78,165,816,263.91/411,116.15
  6. Step 6: Final answer
    x = 190,130.74

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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.