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Finding the Fourth Proportional to 586,406.12, 879,412.34 and 373,042.40

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Solution

The fourth proportional to 586,406.12, 879,412.34 and 373,042.40 is: 559,438.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,406.12 : 879,412.34 = 373,042.40 : x
  2. Step 2: Convert to fraction form
    586,406.12/879,412.34 = 373,042.40/x
  3. Step 3: Cross multiply
    586,406.12x = 879,412.34 × 373,042.40
  4. Step 4: Simplify right side
    586,406.12x = 328,058,086,438.76
  5. Step 5: Solve for x
    x = 328,058,086,438.76/586,406.12
  6. Step 6: Final answer
    x = 559,438.38

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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.