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Finding the Fourth Proportional to 610,505.88, 915,914.58 and 189,785.40

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Solution

The fourth proportional to 610,505.88, 915,914.58 and 189,785.40 is: 284,726.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,505.88 : 915,914.58 = 189,785.40 : x
  2. Step 2: Convert to fraction form
    610,505.88/915,914.58 = 189,785.40/x
  3. Step 3: Cross multiply
    610,505.88x = 915,914.58 × 189,785.40
  4. Step 4: Simplify right side
    610,505.88x = 173,827,214,931.13
  5. Step 5: Solve for x
    x = 173,827,214,931.13/610,505.88
  6. Step 6: Final answer
    x = 284,726.52

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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.