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Finding the Fourth Proportional to 866,866.16, 1,196,364.66 and 499,355.66

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Solution

The fourth proportional to 866,866.16, 1,196,364.66 and 499,355.66 is: 689,162.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,866.16 : 1,196,364.66 = 499,355.66 : x
  2. Step 2: Convert to fraction form
    866,866.16/1,196,364.66 = 499,355.66/x
  3. Step 3: Cross multiply
    866,866.16x = 1,196,364.66 × 499,355.66
  4. Step 4: Simplify right side
    866,866.16x = 597,411,464,394.98
  5. Step 5: Solve for x
    x = 597,411,464,394.98/866,866.16
  6. Step 6: Final answer
    x = 689,162.29

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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.