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Finding the Fourth Proportional to 696,645.16, 960,641.57 and 515,736.52

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Solution

The fourth proportional to 696,645.16, 960,641.57 and 515,736.52 is: 711,176.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,645.16 : 960,641.57 = 515,736.52 : x
  2. Step 2: Convert to fraction form
    696,645.16/960,641.57 = 515,736.52/x
  3. Step 3: Cross multiply
    696,645.16x = 960,641.57 × 515,736.52
  4. Step 4: Simplify right side
    696,645.16x = 495,437,939,166.87
  5. Step 5: Solve for x
    x = 495,437,939,166.87/696,645.16
  6. Step 6: Final answer
    x = 711,176.89

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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.