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Finding the Fourth Proportional to 475,008.72, 712,334.64 and 155,085.84

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Solution

The fourth proportional to 475,008.72, 712,334.64 and 155,085.84 is: 232,570.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,008.72 : 712,334.64 = 155,085.84 : x
  2. Step 2: Convert to fraction form
    475,008.72/712,334.64 = 155,085.84/x
  3. Step 3: Cross multiply
    475,008.72x = 712,334.64 × 155,085.84
  4. Step 4: Simplify right side
    475,008.72x = 110,473,016,005.50
  5. Step 5: Solve for x
    x = 110,473,016,005.50/475,008.72
  6. Step 6: Final answer
    x = 232,570.50

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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.