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Finding the Fourth Proportional to 253,740.48, 350,156.50 and 139,013.53

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Solution

The fourth proportional to 253,740.48, 350,156.50 and 139,013.53 is: 191,835.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,740.48 : 350,156.50 = 139,013.53 : x
  2. Step 2: Convert to fraction form
    253,740.48/350,156.50 = 139,013.53/x
  3. Step 3: Cross multiply
    253,740.48x = 350,156.50 × 139,013.53
  4. Step 4: Simplify right side
    253,740.48x = 48,676,492,646.10
  5. Step 5: Solve for x
    x = 48,676,492,646.10/253,740.48
  6. Step 6: Final answer
    x = 191,835.74

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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.