Home / 85,968,103.20-128,952,154.80-55,357,101.60

Finding the Fourth Proportional to 85,968,103.20, 128,952,154.80 and 55,357,101.60

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Solution

The fourth proportional to 85,968,103.20, 128,952,154.80 and 55,357,101.60 is: 83,035,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,103.20 : 128,952,154.80 = 55,357,101.60 : x
  2. Step 2: Convert to fraction form
    85,968,103.20/128,952,154.80 = 55,357,101.60/x
  3. Step 3: Cross multiply
    85,968,103.20x = 128,952,154.80 × 55,357,101.60
  4. Step 4: Simplify right side
    85,968,103.20x = 7,138,417,534,802,528
  5. Step 5: Solve for x
    x = 7,138,417,534,802,528/85,968,103.20
  6. Step 6: Final answer
    x = 83,035,652.40

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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.