Home / 30,570,859.92-42,169,869.72-19,553,589.84

Finding the Fourth Proportional to 30,570,859.92, 42,169,869.72 and 19,553,589.84

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Solution

The fourth proportional to 30,570,859.92, 42,169,869.72 and 19,553,589.84 is: 26,972,494.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,570,859.92 : 42,169,869.72 = 19,553,589.84 : x
  2. Step 2: Convert to fraction form
    30,570,859.92/42,169,869.72 = 19,553,589.84/x
  3. Step 3: Cross multiply
    30,570,859.92x = 42,169,869.72 × 19,553,589.84
  4. Step 4: Simplify right side
    30,570,859.92x = 824,572,336,111,115.62
  5. Step 5: Solve for x
    x = 824,572,336,111,115.62/30,570,859.92
  6. Step 6: Final answer
    x = 26,972,494.01

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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.