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Finding the Fourth Proportional to 341,390.40, 512,085.60 and 299,918.40

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Solution

The fourth proportional to 341,390.40, 512,085.60 and 299,918.40 is: 449,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,390.40 : 512,085.60 = 299,918.40 : x
  2. Step 2: Convert to fraction form
    341,390.40/512,085.60 = 299,918.40/x
  3. Step 3: Cross multiply
    341,390.40x = 512,085.60 × 299,918.40
  4. Step 4: Simplify right side
    341,390.40x = 153,583,893,815.04
  5. Step 5: Solve for x
    x = 153,583,893,815.04/341,390.40
  6. Step 6: Final answer
    x = 449,877.60

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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.