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Finding the Fourth Proportional to 153,174.61, 211,349.71 and 89,500.09

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Solution

The fourth proportional to 153,174.61, 211,349.71 and 89,500.09 is: 123,491.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,174.61 : 211,349.71 = 89,500.09 : x
  2. Step 2: Convert to fraction form
    153,174.61/211,349.71 = 89,500.09/x
  3. Step 3: Cross multiply
    153,174.61x = 211,349.71 × 89,500.09
  4. Step 4: Simplify right side
    153,174.61x = 18,915,818,066.47
  5. Step 5: Solve for x
    x = 18,915,818,066.47/153,174.61
  6. Step 6: Final answer
    x = 123,491.86

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1.5x scale

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.