Home / 128,742,756.69-177,665,928.87-70,005,000.94

Finding the Fourth Proportional to 128,742,756.69, 177,665,928.87 and 70,005,000.94

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Solution

The fourth proportional to 128,742,756.69, 177,665,928.87 and 70,005,000.94 is: 96,607,404.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742,756.69 : 177,665,928.87 = 70,005,000.94 : x
  2. Step 2: Convert to fraction form
    128,742,756.69/177,665,928.87 = 70,005,000.94/x
  3. Step 3: Cross multiply
    128,742,756.69x = 177,665,928.87 × 70,005,000.94
  4. Step 4: Simplify right side
    128,742,756.69x = 12,437,503,517,550,324
  5. Step 5: Solve for x
    x = 12,437,503,517,550,324/128,742,756.69
  6. Step 6: Final answer
    x = 96,607,404.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.