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Finding the Fourth Proportional to 6,772,946.79, 9,346,672.88 and 3,872,398.39

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Solution

The fourth proportional to 6,772,946.79, 9,346,672.88 and 3,872,398.39 is: 5,343,913.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,772,946.79 : 9,346,672.88 = 3,872,398.39 : x
  2. Step 2: Convert to fraction form
    6,772,946.79/9,346,672.88 = 3,872,398.39/x
  3. Step 3: Cross multiply
    6,772,946.79x = 9,346,672.88 × 3,872,398.39
  4. Step 4: Simplify right side
    6,772,946.79x = 36,194,041,012,368.66
  5. Step 5: Solve for x
    x = 36,194,041,012,368.66/6,772,946.79
  6. Step 6: Final answer
    x = 5,343,913.39

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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.