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Finding the Fourth Proportional to 712,616.69, 983,398.88 and 385,927.06

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Solution

The fourth proportional to 712,616.69, 983,398.88 and 385,927.06 is: 532,572.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,616.69 : 983,398.88 = 385,927.06 : x
  2. Step 2: Convert to fraction form
    712,616.69/983,398.88 = 385,927.06/x
  3. Step 3: Cross multiply
    712,616.69x = 983,398.88 × 385,927.06
  4. Step 4: Simplify right side
    712,616.69x = 379,520,231,719.06
  5. Step 5: Solve for x
    x = 379,520,231,719.06/712,616.69
  6. Step 6: Final answer
    x = 532,572.75

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1.5x scale

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.