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Finding the Fourth Proportional to 79,547.64, 109,775.76 and 43,740.07

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Solution

The fourth proportional to 79,547.64, 109,775.76 and 43,740.07 is: 60,361.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,547.64 : 109,775.76 = 43,740.07 : x
  2. Step 2: Convert to fraction form
    79,547.64/109,775.76 = 43,740.07/x
  3. Step 3: Cross multiply
    79,547.64x = 109,775.76 × 43,740.07
  4. Step 4: Simplify right side
    79,547.64x = 4,801,598,988.24
  5. Step 5: Solve for x
    x = 4,801,598,988.24/79,547.64
  6. Step 6: Final answer
    x = 60,361.30

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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.