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Finding the Fourth Proportional to 79,970, 110,368.32 and 46,436

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Solution

The fourth proportional to 79,970, 110,368.32 and 46,436 is: 64,087.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,970 : 110,368.32 = 46,436 : x
  2. Step 2: Convert to fraction form
    79,970/110,368.32 = 46,436/x
  3. Step 3: Cross multiply
    79,970x = 110,368.32 × 46,436
  4. Step 4: Simplify right side
    79,970x = 5,125,063,307.52
  5. Step 5: Solve for x
    x = 5,125,063,307.52/79,970
  6. Step 6: Final answer
    x = 64,087.32

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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.