Home / 85,547,907.20-128,321,860.80-51,535,683.20

Finding the Fourth Proportional to 85,547,907.20, 128,321,860.80 and 51,535,683.20

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Solution

The fourth proportional to 85,547,907.20, 128,321,860.80 and 51,535,683.20 is: 77,303,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,547,907.20 : 128,321,860.80 = 51,535,683.20 : x
  2. Step 2: Convert to fraction form
    85,547,907.20/128,321,860.80 = 51,535,683.20/x
  3. Step 3: Cross multiply
    85,547,907.20x = 128,321,860.80 × 51,535,683.20
  4. Step 4: Simplify right side
    85,547,907.20x = 6,613,154,765,823,299
  5. Step 5: Solve for x
    x = 6,613,154,765,823,299/85,547,907.20
  6. Step 6: Final answer
    x = 77,303,524.80

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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.