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Finding the Fourth Proportional to 145,673,313.60, 218,509,970.40 and 145,673,313.60

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Solution

The fourth proportional to 145,673,313.60, 218,509,970.40 and 145,673,313.60 is: 218,509,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,673,313.60 : 218,509,970.40 = 145,673,313.60 : x
  2. Step 2: Convert to fraction form
    145,673,313.60/218,509,970.40 = 145,673,313.60/x
  3. Step 3: Cross multiply
    145,673,313.60x = 218,509,970.40 × 145,673,313.60
  4. Step 4: Simplify right side
    145,673,313.60x = 31,831,071,442,805,916
  5. Step 5: Solve for x
    x = 31,831,071,442,805,916/145,673,313.60
  6. Step 6: Final answer
    x = 218,509,970.40

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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.