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Finding the Fourth Proportional to 692,496.60, 955,641.36 and 386,555.28

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Solution

The fourth proportional to 692,496.60, 955,641.36 and 386,555.28 is: 533,444.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,496.60 : 955,641.36 = 386,555.28 : x
  2. Step 2: Convert to fraction form
    692,496.60/955,641.36 = 386,555.28/x
  3. Step 3: Cross multiply
    692,496.60x = 955,641.36 × 386,555.28
  4. Step 4: Simplify right side
    692,496.60x = 369,408,213,494.38
  5. Step 5: Solve for x
    x = 369,408,213,494.38/692,496.60
  6. Step 6: Final answer
    x = 533,444.08

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Double scale
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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.