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Finding the Fourth Proportional to 101,643.60, 152,465.40 and 46,239.60

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Solution

The fourth proportional to 101,643.60, 152,465.40 and 46,239.60 is: 69,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,643.60 : 152,465.40 = 46,239.60 : x
  2. Step 2: Convert to fraction form
    101,643.60/152,465.40 = 46,239.60/x
  3. Step 3: Cross multiply
    101,643.60x = 152,465.40 × 46,239.60
  4. Step 4: Simplify right side
    101,643.60x = 7,049,939,109.84
  5. Step 5: Solve for x
    x = 7,049,939,109.84/101,643.60
  6. Step 6: Final answer
    x = 69,359.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.