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Finding the Fourth Proportional to 424,673.20, 637,009.80 and 291,962.80

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Solution

The fourth proportional to 424,673.20, 637,009.80 and 291,962.80 is: 437,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,673.20 : 637,009.80 = 291,962.80 : x
  2. Step 2: Convert to fraction form
    424,673.20/637,009.80 = 291,962.80/x
  3. Step 3: Cross multiply
    424,673.20x = 637,009.80 × 291,962.80
  4. Step 4: Simplify right side
    424,673.20x = 185,983,164,835.44
  5. Step 5: Solve for x
    x = 185,983,164,835.44/424,673.20
  6. Step 6: Final answer
    x = 437,944.20

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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.