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Finding the Fourth Proportional to 661,646.40, 924,307.50 and 661,646.40

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Solution

The fourth proportional to 661,646.40, 924,307.50 and 661,646.40 is: 924,307.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,646.40 : 924,307.50 = 661,646.40 : x
  2. Step 2: Convert to fraction form
    661,646.40/924,307.50 = 661,646.40/x
  3. Step 3: Cross multiply
    661,646.40x = 924,307.50 × 661,646.40
  4. Step 4: Simplify right side
    661,646.40x = 611,564,729,868
  5. Step 5: Solve for x
    x = 611,564,729,868/661,646.40
  6. Step 6: Final answer
    x = 924,307.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.