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Finding the Fourth Proportional to 28,495,875,214.40, 39,812,688,030.40 and 28,495,875,214.40

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Solution

The fourth proportional to 28,495,875,214.40, 39,812,688,030.40 and 28,495,875,214.40 is: 39,812,688,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495,875,214.40 : 39,812,688,030.40 = 28,495,875,214.40 : x
  2. Step 2: Convert to fraction form
    28,495,875,214.40/39,812,688,030.40 = 28,495,875,214.40/x
  3. Step 3: Cross multiply
    28,495,875,214.40x = 39,812,688,030.40 × 28,495,875,214.40
  4. Step 4: Simplify right side
    28,495,875,214.40x = 1,134,497,390,064,114,991,104
  5. Step 5: Solve for x
    x = 1,134,497,390,064,114,991,104/28,495,875,214.40
  6. Step 6: Final answer
    x = 39,812,688,030.40

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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.