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Finding the Fourth Proportional to 316,543.70, 474,815.55 and 106,130.90

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Solution

The fourth proportional to 316,543.70, 474,815.55 and 106,130.90 is: 159,196.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,543.70 : 474,815.55 = 106,130.90 : x
  2. Step 2: Convert to fraction form
    316,543.70/474,815.55 = 106,130.90/x
  3. Step 3: Cross multiply
    316,543.70x = 474,815.55 × 106,130.90
  4. Step 4: Simplify right side
    316,543.70x = 50,392,601,655.50
  5. Step 5: Solve for x
    x = 50,392,601,655.50/316,543.70
  6. Step 6: Final answer
    x = 159,196.35

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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.