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Finding the Fourth Proportional to 7,666.65, 10,575.65 and 4,829.15

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Solution

The fourth proportional to 7,666.65, 10,575.65 and 4,829.15 is: 6,661.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.65 : 10,575.65 = 4,829.15 : x
  2. Step 2: Convert to fraction form
    7,666.65/10,575.65 = 4,829.15/x
  3. Step 3: Cross multiply
    7,666.65x = 10,575.65 × 4,829.15
  4. Step 4: Simplify right side
    7,666.65x = 51,071,323.17
  5. Step 5: Solve for x
    x = 51,071,323.17/7,666.65
  6. Step 6: Final answer
    x = 6,661.49

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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.