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Finding the Fourth Proportional to 258,893.33, 357,088.76 and 172,808.91

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Solution

The fourth proportional to 258,893.33, 357,088.76 and 172,808.91 is: 238,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,893.33 : 357,088.76 = 172,808.91 : x
  2. Step 2: Convert to fraction form
    258,893.33/357,088.76 = 172,808.91/x
  3. Step 3: Cross multiply
    258,893.33x = 357,088.76 × 172,808.91
  4. Step 4: Simplify right side
    258,893.33x = 61,708,119,842.38
  5. Step 5: Solve for x
    x = 61,708,119,842.38/258,893.33
  6. Step 6: Final answer
    x = 238,353.45

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1.5x scale

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.