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Finding the Fourth Proportional to 692,681.81, 955,891.76 and 386,763.39

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Solution

The fourth proportional to 692,681.81, 955,891.76 and 386,763.39 is: 533,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,681.81 : 955,891.76 = 386,763.39 : x
  2. Step 2: Convert to fraction form
    692,681.81/955,891.76 = 386,763.39/x
  3. Step 3: Cross multiply
    692,681.81x = 955,891.76 × 386,763.39
  4. Step 4: Simplify right side
    692,681.81x = 369,703,935,636.85
  5. Step 5: Solve for x
    x = 369,703,935,636.85/692,681.81
  6. Step 6: Final answer
    x = 533,728.38

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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.