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Finding the Fourth Proportional to 470,265.12, 705,248.64 and 154,648.80

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Solution

The fourth proportional to 470,265.12, 705,248.64 and 154,648.80 is: 231,924.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,265.12 : 705,248.64 = 154,648.80 : x
  2. Step 2: Convert to fraction form
    470,265.12/705,248.64 = 154,648.80/x
  3. Step 3: Cross multiply
    470,265.12x = 705,248.64 × 154,648.80
  4. Step 4: Simplify right side
    470,265.12x = 109,065,855,877.63
  5. Step 5: Solve for x
    x = 109,065,855,877.63/470,265.12
  6. Step 6: Final answer
    x = 231,924.19

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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.