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Finding the Fourth Proportional to 615,543.60, 923,315.40 and 350,122.80

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Solution

The fourth proportional to 615,543.60, 923,315.40 and 350,122.80 is: 525,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,543.60 : 923,315.40 = 350,122.80 : x
  2. Step 2: Convert to fraction form
    615,543.60/923,315.40 = 350,122.80/x
  3. Step 3: Cross multiply
    615,543.60x = 923,315.40 × 350,122.80
  4. Step 4: Simplify right side
    615,543.60x = 323,273,773,131.12
  5. Step 5: Solve for x
    x = 323,273,773,131.12/615,543.60
  6. Step 6: Final answer
    x = 525,184.20

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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.