Home / 86,938,363.20-130,407,544.80-65,255,570.40

Finding the Fourth Proportional to 86,938,363.20, 130,407,544.80 and 65,255,570.40

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Solution

The fourth proportional to 86,938,363.20, 130,407,544.80 and 65,255,570.40 is: 97,883,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938,363.20 : 130,407,544.80 = 65,255,570.40 : x
  2. Step 2: Convert to fraction form
    86,938,363.20/130,407,544.80 = 65,255,570.40/x
  3. Step 3: Cross multiply
    86,938,363.20x = 130,407,544.80 × 65,255,570.40
  4. Step 4: Simplify right side
    86,938,363.20x = 8,509,818,720,387,554
  5. Step 5: Solve for x
    x = 8,509,818,720,387,554/86,938,363.20
  6. Step 6: Final answer
    x = 97,883,355.60

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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.