Home / 20,487,237,210.45-28,263,730,055.15-13,715,237,621.05

Finding the Fourth Proportional to 20,487,237,210.45, 28,263,730,055.15 and 13,715,237,621.05

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Solution

The fourth proportional to 20,487,237,210.45, 28,263,730,055.15 and 13,715,237,621.05 is: 18,921,232,266.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487,237,210.45 : 28,263,730,055.15 = 13,715,237,621.05 : x
  2. Step 2: Convert to fraction form
    20,487,237,210.45/28,263,730,055.15 = 13,715,237,621.05/x
  3. Step 3: Cross multiply
    20,487,237,210.45x = 28,263,730,055.15 × 13,715,237,621.05
  4. Step 4: Simplify right side
    20,487,237,210.45x = 387,643,773,763,523,837,952
  5. Step 5: Solve for x
    x = 387,643,773,763,523,837,952/20,487,237,210.45
  6. Step 6: Final answer
    x = 18,921,232,266.78

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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.