Home / 30,999,725.20-42,779,580.81-19,234,617.76

Finding the Fourth Proportional to 30,999,725.20, 42,779,580.81 and 19,234,617.76

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Solution

The fourth proportional to 30,999,725.20, 42,779,580.81 and 19,234,617.76 is: 26,543,747.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,999,725.20 : 42,779,580.81 = 19,234,617.76 : x
  2. Step 2: Convert to fraction form
    30,999,725.20/42,779,580.81 = 19,234,617.76/x
  3. Step 3: Cross multiply
    30,999,725.20x = 42,779,580.81 × 19,234,617.76
  4. Step 4: Simplify right side
    30,999,725.20x = 822,848,884,813,381.25
  5. Step 5: Solve for x
    x = 822,848,884,813,381.25/30,999,725.20
  6. Step 6: Final answer
    x = 26,543,747.71

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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.