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Finding the Fourth Proportional to 644,036.85, 970,684.55 and 555,152.39

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Solution

The fourth proportional to 644,036.85, 970,684.55 and 555,152.39 is: 836,718.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,036.85 : 970,684.55 = 555,152.39 : x
  2. Step 2: Convert to fraction form
    644,036.85/970,684.55 = 555,152.39/x
  3. Step 3: Cross multiply
    644,036.85x = 970,684.55 × 555,152.39
  4. Step 4: Simplify right side
    644,036.85x = 538,877,840,239.39
  5. Step 5: Solve for x
    x = 538,877,840,239.39/644,036.85
  6. Step 6: Final answer
    x = 836,718.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.