Home / 128,386.04-192,597.52-39,646.40

Finding the Fourth Proportional to 128,386.04, 192,597.52 and 39,646.40

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Solution

The fourth proportional to 128,386.04, 192,597.52 and 39,646.40 is: 59,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,386.04 : 192,597.52 = 39,646.40 : x
  2. Step 2: Convert to fraction form
    128,386.04/192,597.52 = 39,646.40/x
  3. Step 3: Cross multiply
    128,386.04x = 192,597.52 × 39,646.40
  4. Step 4: Simplify right side
    128,386.04x = 7,635,798,316.93
  5. Step 5: Solve for x
    x = 7,635,798,316.93/128,386.04
  6. Step 6: Final answer
    x = 59,475.30

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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.