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Finding the Fourth Proportional to 615,681.20, 923,435.40 and 194,999.60

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Solution

The fourth proportional to 615,681.20, 923,435.40 and 194,999.60 is: 292,472.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,681.20 : 923,435.40 = 194,999.60 : x
  2. Step 2: Convert to fraction form
    615,681.20/923,435.40 = 194,999.60/x
  3. Step 3: Cross multiply
    615,681.20x = 923,435.40 × 194,999.60
  4. Step 4: Simplify right side
    615,681.20x = 180,069,533,625.84
  5. Step 5: Solve for x
    x = 180,069,533,625.84/615,681.20
  6. Step 6: Final answer
    x = 292,472.04

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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.