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Finding the Fourth Proportional to 125,316.65, 172,937.36 and 67,955.93

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Solution

The fourth proportional to 125,316.65, 172,937.36 and 67,955.93 is: 93,779.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,316.65 : 172,937.36 = 67,955.93 : x
  2. Step 2: Convert to fraction form
    125,316.65/172,937.36 = 67,955.93/x
  3. Step 3: Cross multiply
    125,316.65x = 172,937.36 × 67,955.93
  4. Step 4: Simplify right side
    125,316.65x = 11,752,119,084.26
  5. Step 5: Solve for x
    x = 11,752,119,084.26/125,316.65
  6. Step 6: Final answer
    x = 93,779.39

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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.