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Finding the Fourth Proportional to 62,779.34, 86,639.74 and 34,485.32

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Solution

The fourth proportional to 62,779.34, 86,639.74 and 34,485.32 is: 47,592.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,779.34 : 86,639.74 = 34,485.32 : x
  2. Step 2: Convert to fraction form
    62,779.34/86,639.74 = 34,485.32/x
  3. Step 3: Cross multiply
    62,779.34x = 86,639.74 × 34,485.32
  4. Step 4: Simplify right side
    62,779.34x = 2,987,799,158.62
  5. Step 5: Solve for x
    x = 2,987,799,158.62/62,779.34
  6. Step 6: Final answer
    x = 47,592.08

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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.