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Finding the Fourth Proportional to 710,222.28, 980,100.22 and 387,932.28

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Solution

The fourth proportional to 710,222.28, 980,100.22 and 387,932.28 is: 535,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,222.28 : 980,100.22 = 387,932.28 : x
  2. Step 2: Convert to fraction form
    710,222.28/980,100.22 = 387,932.28/x
  3. Step 3: Cross multiply
    710,222.28x = 980,100.22 × 387,932.28
  4. Step 4: Simplify right side
    710,222.28x = 380,212,512,973.10
  5. Step 5: Solve for x
    x = 380,212,512,973.10/710,222.28
  6. Step 6: Final answer
    x = 535,342.98

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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.