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Finding the Fourth Proportional to 714,298.71, 985,701.17 and 392,014.16

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Solution

The fourth proportional to 714,298.71, 985,701.17 and 392,014.16 is: 540,962.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,298.71 : 985,701.17 = 392,014.16 : x
  2. Step 2: Convert to fraction form
    714,298.71/985,701.17 = 392,014.16/x
  3. Step 3: Cross multiply
    714,298.71x = 985,701.17 × 392,014.16
  4. Step 4: Simplify right side
    714,298.71x = 386,408,809,279.99
  5. Step 5: Solve for x
    x = 386,408,809,279.99/714,298.71
  6. Step 6: Final answer
    x = 540,962.49

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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.