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Finding the Fourth Proportional to 105,653.61, 145,795.37 and 57,903.57

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Solution

The fourth proportional to 105,653.61, 145,795.37 and 57,903.57 is: 79,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,653.61 : 145,795.37 = 57,903.57 : x
  2. Step 2: Convert to fraction form
    105,653.61/145,795.37 = 57,903.57/x
  3. Step 3: Cross multiply
    105,653.61x = 145,795.37 × 57,903.57
  4. Step 4: Simplify right side
    105,653.61x = 8,442,072,412.47
  5. Step 5: Solve for x
    x = 8,442,072,412.47/105,653.61
  6. Step 6: Final answer
    x = 79,903.30

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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.