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Finding the Fourth Proportional to 658,415.69, 986,066.56 and 561,261.66

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Solution

The fourth proportional to 658,415.69, 986,066.56 and 561,261.66 is: 840,565.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,415.69 : 986,066.56 = 561,261.66 : x
  2. Step 2: Convert to fraction form
    658,415.69/986,066.56 = 561,261.66/x
  3. Step 3: Cross multiply
    658,415.69x = 986,066.56 × 561,261.66
  4. Step 4: Simplify right side
    658,415.69x = 553,441,351,339.92
  5. Step 5: Solve for x
    x = 553,441,351,339.92/658,415.69
  6. Step 6: Final answer
    x = 840,565.26

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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.