Home / 78,352,184.80-117,528,277.20-70,415,999.20

Finding the Fourth Proportional to 78,352,184.80, 117,528,277.20 and 70,415,999.20

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Solution

The fourth proportional to 78,352,184.80, 117,528,277.20 and 70,415,999.20 is: 105,623,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,352,184.80 : 117,528,277.20 = 70,415,999.20 : x
  2. Step 2: Convert to fraction form
    78,352,184.80/117,528,277.20 = 70,415,999.20/x
  3. Step 3: Cross multiply
    78,352,184.80x = 117,528,277.20 × 70,415,999.20
  4. Step 4: Simplify right side
    78,352,184.80x = 8,275,871,073,292,579
  5. Step 5: Solve for x
    x = 8,275,871,073,292,579/78,352,184.80
  6. Step 6: Final answer
    x = 105,623,998.80

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Double scale
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Similar ratio
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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.