Home / 81,607,709.40-122,411,564.10-70,978,889.40

Finding the Fourth Proportional to 81,607,709.40, 122,411,564.10 and 70,978,889.40

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Solution

The fourth proportional to 81,607,709.40, 122,411,564.10 and 70,978,889.40 is: 106,468,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607,709.40 : 122,411,564.10 = 70,978,889.40 : x
  2. Step 2: Convert to fraction form
    81,607,709.40/122,411,564.10 = 70,978,889.40/x
  3. Step 3: Cross multiply
    81,607,709.40x = 122,411,564.10 × 70,978,889.40
  4. Step 4: Simplify right side
    81,607,709.40x = 8,688,636,869,534,911
  5. Step 5: Solve for x
    x = 8,688,636,869,534,911/81,607,709.40
  6. Step 6: Final answer
    x = 106,468,334.10

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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.