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Finding the Fourth Proportional to 662,541.76, 914,426.76 and 390,593.44

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Solution

The fourth proportional to 662,541.76, 914,426.76 and 390,593.44 is: 539,089.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,541.76 : 914,426.76 = 390,593.44 : x
  2. Step 2: Convert to fraction form
    662,541.76/914,426.76 = 390,593.44/x
  3. Step 3: Cross multiply
    662,541.76x = 914,426.76 × 390,593.44
  4. Step 4: Simplify right side
    662,541.76x = 357,169,093,816.45
  5. Step 5: Solve for x
    x = 357,169,093,816.45/662,541.76
  6. Step 6: Final answer
    x = 539,089.18

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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.