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Finding the Fourth Proportional to 525,969.60, 789,472.80 and 260,030.40

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Solution

The fourth proportional to 525,969.60, 789,472.80 and 260,030.40 is: 390,301.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,969.60 : 789,472.80 = 260,030.40 : x
  2. Step 2: Convert to fraction form
    525,969.60/789,472.80 = 260,030.40/x
  3. Step 3: Cross multiply
    525,969.60x = 789,472.80 × 260,030.40
  4. Step 4: Simplify right side
    525,969.60x = 205,286,927,973.12
  5. Step 5: Solve for x
    x = 205,286,927,973.12/525,969.60
  6. Step 6: Final answer
    x = 390,301.89

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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.