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Finding the Fourth Proportional to 209,736,585.60, 314,604,878.40 and 133,398,038.40

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Solution

The fourth proportional to 209,736,585.60, 314,604,878.40 and 133,398,038.40 is: 200,097,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,736,585.60 : 314,604,878.40 = 133,398,038.40 : x
  2. Step 2: Convert to fraction form
    209,736,585.60/314,604,878.40 = 133,398,038.40/x
  3. Step 3: Cross multiply
    209,736,585.60x = 314,604,878.40 × 133,398,038.40
  4. Step 4: Simplify right side
    209,736,585.60x = 41,967,673,649,630,528
  5. Step 5: Solve for x
    x = 41,967,673,649,630,528/209,736,585.60
  6. Step 6: Final answer
    x = 200,097,057.60

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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.