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Finding the Fourth Proportional to 368,715.30, 553,073.34 and 102,475.86

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Solution

The fourth proportional to 368,715.30, 553,073.34 and 102,475.86 is: 153,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,715.30 : 553,073.34 = 102,475.86 : x
  2. Step 2: Convert to fraction form
    368,715.30/553,073.34 = 102,475.86/x
  3. Step 3: Cross multiply
    368,715.30x = 553,073.34 × 102,475.86
  4. Step 4: Simplify right side
    368,715.30x = 56,676,666,159.57
  5. Step 5: Solve for x
    x = 56,676,666,159.57/368,715.30
  6. Step 6: Final answer
    x = 153,713.90

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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.