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Finding the Fourth Proportional to 570,874.60, 786,208.98 and 558,476.74

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Solution

The fourth proportional to 570,874.60, 786,208.98 and 558,476.74 is: 769,134.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,874.60 : 786,208.98 = 558,476.74 : x
  2. Step 2: Convert to fraction form
    570,874.60/786,208.98 = 558,476.74/x
  3. Step 3: Cross multiply
    570,874.60x = 786,208.98 × 558,476.74
  4. Step 4: Simplify right side
    570,874.60x = 439,079,428,109.13
  5. Step 5: Solve for x
    x = 439,079,428,109.13/570,874.60
  6. Step 6: Final answer
    x = 769,134.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.