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Finding the Fourth Proportional to 364,622.80, 546,934.20 and 127,989.40

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Solution

The fourth proportional to 364,622.80, 546,934.20 and 127,989.40 is: 191,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,622.80 : 546,934.20 = 127,989.40 : x
  2. Step 2: Convert to fraction form
    364,622.80/546,934.20 = 127,989.40/x
  3. Step 3: Cross multiply
    364,622.80x = 546,934.20 × 127,989.40
  4. Step 4: Simplify right side
    364,622.80x = 70,001,780,097.48
  5. Step 5: Solve for x
    x = 70,001,780,097.48/364,622.80
  6. Step 6: Final answer
    x = 191,984.10

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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.