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Finding the Fourth Proportional to 415,410.11, 623,114.94 and 99,866.93

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Solution

The fourth proportional to 415,410.11, 623,114.94 and 99,866.93 is: 149,800.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,410.11 : 623,114.94 = 99,866.93 : x
  2. Step 2: Convert to fraction form
    415,410.11/623,114.94 = 99,866.93/x
  3. Step 3: Cross multiply
    415,410.11x = 623,114.94 × 99,866.93
  4. Step 4: Simplify right side
    415,410.11x = 62,228,576,094.93
  5. Step 5: Solve for x
    x = 62,228,576,094.93/415,410.11
  6. Step 6: Final answer
    x = 149,800.34

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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.