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Finding the Fourth Proportional to 78,459.69, 108,266.28 and 46,622.44

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Solution

The fourth proportional to 78,459.69, 108,266.28 and 46,622.44 is: 64,334.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,459.69 : 108,266.28 = 46,622.44 : x
  2. Step 2: Convert to fraction form
    78,459.69/108,266.28 = 46,622.44/x
  3. Step 3: Cross multiply
    78,459.69x = 108,266.28 × 46,622.44
  4. Step 4: Simplify right side
    78,459.69x = 5,047,638,143.32
  5. Step 5: Solve for x
    x = 5,047,638,143.32/78,459.69
  6. Step 6: Final answer
    x = 64,334.16

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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.