Home / 20,802,513,068.80-31,203,769,603.20-19,210,740,985.60

Finding the Fourth Proportional to 20,802,513,068.80, 31,203,769,603.20 and 19,210,740,985.60

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Solution

The fourth proportional to 20,802,513,068.80, 31,203,769,603.20 and 19,210,740,985.60 is: 28,816,111,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802,513,068.80 : 31,203,769,603.20 = 19,210,740,985.60 : x
  2. Step 2: Convert to fraction form
    20,802,513,068.80/31,203,769,603.20 = 19,210,740,985.60/x
  3. Step 3: Cross multiply
    20,802,513,068.80x = 31,203,769,603.20 × 19,210,740,985.60
  4. Step 4: Simplify right side
    20,802,513,068.80x = 599,447,535,621,413,666,816
  5. Step 5: Solve for x
    x = 599,447,535,621,413,666,816/20,802,513,068.80
  6. Step 6: Final answer
    x = 28,816,111,478.40

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1.5x scale

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.