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Finding the Fourth Proportional to 692,641.25, 955,835.62 and 386,722.32

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Solution

The fourth proportional to 692,641.25, 955,835.62 and 386,722.32 is: 533,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,641.25 : 955,835.62 = 386,722.32 : x
  2. Step 2: Convert to fraction form
    692,641.25/955,835.62 = 386,722.32/x
  3. Step 3: Cross multiply
    692,641.25x = 955,835.62 × 386,722.32
  4. Step 4: Simplify right side
    692,641.25x = 369,642,963,953.85
  5. Step 5: Solve for x
    x = 369,642,963,953.85/692,641.25
  6. Step 6: Final answer
    x = 533,671.60

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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.