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Finding the Fourth Proportional to 704,630.48, 972,642.20 and 418,150.49

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Solution

The fourth proportional to 704,630.48, 972,642.20 and 418,150.49 is: 577,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,630.48 : 972,642.20 = 418,150.49 : x
  2. Step 2: Convert to fraction form
    704,630.48/972,642.20 = 418,150.49/x
  3. Step 3: Cross multiply
    704,630.48x = 972,642.20 × 418,150.49
  4. Step 4: Simplify right side
    704,630.48x = 406,710,805,570.72
  5. Step 5: Solve for x
    x = 406,710,805,570.72/704,630.48
  6. Step 6: Final answer
    x = 577,197.30

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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.