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Finding the Fourth Proportional to 261,653, 392,489.04 and 93,185.72

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Solution

The fourth proportional to 261,653, 392,489.04 and 93,185.72 is: 139,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,653 : 392,489.04 = 93,185.72 : x
  2. Step 2: Convert to fraction form
    261,653/392,489.04 = 93,185.72/x
  3. Step 3: Cross multiply
    261,653x = 392,489.04 × 93,185.72
  4. Step 4: Simplify right side
    261,653x = 36,574,373,784.51
  5. Step 5: Solve for x
    x = 36,574,373,784.51/261,653
  6. Step 6: Final answer
    x = 139,781.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.