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Finding the Fourth Proportional to 690,968.88, 953,497.71 and 380,809.92

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Solution

The fourth proportional to 690,968.88, 953,497.71 and 380,809.92 is: 525,496.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,968.88 : 953,497.71 = 380,809.92 : x
  2. Step 2: Convert to fraction form
    690,968.88/953,497.71 = 380,809.92/x
  3. Step 3: Cross multiply
    690,968.88x = 953,497.71 × 380,809.92
  4. Step 4: Simplify right side
    690,968.88x = 363,101,386,665.28
  5. Step 5: Solve for x
    x = 363,101,386,665.28/690,968.88
  6. Step 6: Final answer
    x = 525,496.01

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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.