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Finding the Fourth Proportional to 638,090.45, 957,154.23 and 238,655.01

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Solution

The fourth proportional to 638,090.45, 957,154.23 and 238,655.01 is: 357,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,090.45 : 957,154.23 = 238,655.01 : x
  2. Step 2: Convert to fraction form
    638,090.45/957,154.23 = 238,655.01/x
  3. Step 3: Cross multiply
    638,090.45x = 957,154.23 × 238,655.01
  4. Step 4: Simplify right side
    638,090.45x = 228,429,652,332.19
  5. Step 5: Solve for x
    x = 228,429,652,332.19/638,090.45
  6. Step 6: Final answer
    x = 357,989.46

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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.