Home / 19,161,831.40-28,742,747.10-12,359,386.60

Finding the Fourth Proportional to 19,161,831.40, 28,742,747.10 and 12,359,386.60

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Solution

The fourth proportional to 19,161,831.40, 28,742,747.10 and 12,359,386.60 is: 18,539,079.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161,831.40 : 28,742,747.10 = 12,359,386.60 : x
  2. Step 2: Convert to fraction form
    19,161,831.40/28,742,747.10 = 12,359,386.60/x
  3. Step 3: Cross multiply
    19,161,831.40x = 28,742,747.10 × 12,359,386.60
  4. Step 4: Simplify right side
    19,161,831.40x = 355,242,723,354,928.88
  5. Step 5: Solve for x
    x = 355,242,723,354,928.88/19,161,831.40
  6. Step 6: Final answer
    x = 18,539,079.90

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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.