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Finding the Fourth Proportional to 68,698,809.40, 103,048,214.10 and 34,686,585.40

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Solution

The fourth proportional to 68,698,809.40, 103,048,214.10 and 34,686,585.40 is: 52,029,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,698,809.40 : 103,048,214.10 = 34,686,585.40 : x
  2. Step 2: Convert to fraction form
    68,698,809.40/103,048,214.10 = 34,686,585.40/x
  3. Step 3: Cross multiply
    68,698,809.40x = 103,048,214.10 × 34,686,585.40
  4. Step 4: Simplify right side
    68,698,809.40x = 3,574,390,678,697,134
  5. Step 5: Solve for x
    x = 3,574,390,678,697,134/68,698,809.40
  6. Step 6: Final answer
    x = 52,029,878.10

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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.