Home / 191,808,665.40-287,712,998.10-70,615,039.80

Finding the Fourth Proportional to 191,808,665.40, 287,712,998.10 and 70,615,039.80

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Solution

The fourth proportional to 191,808,665.40, 287,712,998.10 and 70,615,039.80 is: 105,922,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,808,665.40 : 287,712,998.10 = 70,615,039.80 : x
  2. Step 2: Convert to fraction form
    191,808,665.40/287,712,998.10 = 70,615,039.80/x
  3. Step 3: Cross multiply
    191,808,665.40x = 287,712,998.10 × 70,615,039.80
  4. Step 4: Simplify right side
    191,808,665.40x = 20,316,864,811,808,824
  5. Step 5: Solve for x
    x = 20,316,864,811,808,824/191,808,665.40
  6. Step 6: Final answer
    x = 105,922,559.70

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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.