Home / 191,191,985.70-286,787,541.15-81,946,320.18

Finding the Fourth Proportional to 191,191,985.70, 286,787,541.15 and 81,946,320.18

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Solution

The fourth proportional to 191,191,985.70, 286,787,541.15 and 81,946,320.18 is: 122,919,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,191,985.70 : 286,787,541.15 = 81,946,320.18 : x
  2. Step 2: Convert to fraction form
    191,191,985.70/286,787,541.15 = 81,946,320.18/x
  3. Step 3: Cross multiply
    191,191,985.70x = 286,787,541.15 × 81,946,320.18
  4. Step 4: Simplify right side
    191,191,985.70x = 23,501,183,670,712,824
  5. Step 5: Solve for x
    x = 23,501,183,670,712,824/191,191,985.70
  6. Step 6: Final answer
    x = 122,919,292.80

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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.