Home / 191,855,897.20-287,720,860.20-70,671,602.80

Finding the Fourth Proportional to 191,855,897.20, 287,720,860.20 and 70,671,602.80

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Solution

The fourth proportional to 191,855,897.20, 287,720,860.20 and 70,671,602.80 is: 105,984,202.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,855,897.20 : 287,720,860.20 = 70,671,602.80 : x
  2. Step 2: Convert to fraction form
    191,855,897.20/287,720,860.20 = 70,671,602.80/x
  3. Step 3: Cross multiply
    191,855,897.20x = 287,720,860.20 × 70,671,602.80
  4. Step 4: Simplify right side
    191,855,897.20x = 20,333,694,349,328,728
  5. Step 5: Solve for x
    x = 20,333,694,349,328,728/191,855,897.20
  6. Step 6: Final answer
    x = 105,984,202.97

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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.